docs/vendors~main.282207f6813e19aae3ca.bundle.js.map
{"version":3,"file":"vendors~main.282207f6813e19aae3ca.bundle.js","sources":["webpack:///./node_modules/react/index.js","webpack:///./node_modules/object-assign/index.js","webpack:///./node_modules/es5-shim/es5-shim.js","webpack:///./node_modules/es5-shim/es5-sham.js","webpack:///./node_modules/es6-shim/es6-shim.js","webpack:///./node_modules/keycode/index.js","webpack:///./node_modules/react/cjs/react.production.min.js","webpack:///./node_modules/react-dom/cjs/react-dom.production.min.js","webpack:///./node_modules/react-dom/node_modules/scheduler/cjs/scheduler.production.min.js","webpack:///./node_modules/escape-html/index.js","webpack:///./node_modules/react-is/cjs/react-is.production.min.js"],"sourcesContent":["'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n module.exports = require('./cjs/react.production.min.js');\n} else {\n module.exports = require('./cjs/react.development.js');\n}\n","/*\nobject-assign\n(c) Sindre Sorhus\n@license MIT\n*/\n\n'use strict';\n/* eslint-disable no-unused-vars */\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\nvar propIsEnumerable = Object.prototype.propertyIsEnumerable;\n\nfunction toObject(val) {\n\tif (val === null || val === undefined) {\n\t\tthrow new TypeError('Object.assign cannot be called with null or undefined');\n\t}\n\n\treturn Object(val);\n}\n\nfunction shouldUseNative() {\n\ttry {\n\t\tif (!Object.assign) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Detect buggy property enumeration order in older V8 versions.\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=4118\n\t\tvar test1 = new String('abc'); // eslint-disable-line no-new-wrappers\n\t\ttest1[5] = 'de';\n\t\tif (Object.getOwnPropertyNames(test1)[0] === '5') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test2 = {};\n\t\tfor (var i = 0; i < 10; i++) {\n\t\t\ttest2['_' + String.fromCharCode(i)] = i;\n\t\t}\n\t\tvar order2 = Object.getOwnPropertyNames(test2).map(function (n) {\n\t\t\treturn test2[n];\n\t\t});\n\t\tif (order2.join('') !== '0123456789') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test3 = {};\n\t\t'abcdefghijklmnopqrst'.split('').forEach(function (letter) {\n\t\t\ttest3[letter] = letter;\n\t\t});\n\t\tif (Object.keys(Object.assign({}, test3)).join('') !==\n\t\t\t\t'abcdefghijklmnopqrst') {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t} catch (err) {\n\t\t// We don't expect any of the above to throw, but better to be safe.\n\t\treturn false;\n\t}\n}\n\nmodule.exports = shouldUseNative() ? Object.assign : function (target, source) {\n\tvar from;\n\tvar to = toObject(target);\n\tvar symbols;\n\n\tfor (var s = 1; s < arguments.length; s++) {\n\t\tfrom = Object(arguments[s]);\n\n\t\tfor (var key in from) {\n\t\t\tif (hasOwnProperty.call(from, key)) {\n\t\t\t\tto[key] = from[key];\n\t\t\t}\n\t\t}\n\n\t\tif (getOwnPropertySymbols) {\n\t\t\tsymbols = getOwnPropertySymbols(from);\n\t\t\tfor (var i = 0; i < symbols.length; i++) {\n\t\t\t\tif (propIsEnumerable.call(from, symbols[i])) {\n\t\t\t\t\tto[symbols[i]] = from[symbols[i]];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn to;\n};\n","/*!\n * https://github.com/es-shims/es5-shim\n * @license es5-shim Copyright 2009-2015 by contributors, MIT License\n * see https://github.com/es-shims/es5-shim/blob/master/LICENSE\n */\n\n// vim: ts=4 sts=4 sw=4 expandtab\n\n// Add semicolon to prevent IIFE from being passed as argument to concatenated code.\n;\n\n// UMD (Universal Module Definition)\n// see https://github.com/umdjs/umd/blob/master/templates/returnExports.js\n(function (root, factory) {\n 'use strict';\n\n /* global define, exports, module */\n if (typeof define === 'function' && define.amd) {\n // AMD. Register as an anonymous module.\n define(factory);\n } else if (typeof exports === 'object') {\n // Node. Does not work with strict CommonJS, but\n // only CommonJS-like enviroments that support module.exports,\n // like Node.\n module.exports = factory();\n } else {\n // Browser globals (root is window)\n root.returnExports = factory();\n }\n}(this, function () {\n /**\n * Brings an environment as close to ECMAScript 5 compliance\n * as is possible with the facilities of erstwhile engines.\n *\n * Annotated ES5: http://es5.github.com/ (specific links below)\n * ES5 Spec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf\n * Required reading: http://javascriptweblog.wordpress.com/2011/12/05/extending-javascript-natives/\n */\n\n // Shortcut to an often accessed properties, in order to avoid multiple\n // dereference that costs universally. This also holds a reference to known-good\n // functions.\n var $Array = Array;\n var ArrayPrototype = $Array.prototype;\n var $Object = Object;\n var ObjectPrototype = $Object.prototype;\n var $Function = Function;\n var FunctionPrototype = $Function.prototype;\n var $String = String;\n var StringPrototype = $String.prototype;\n var $Number = Number;\n var NumberPrototype = $Number.prototype;\n var array_slice = ArrayPrototype.slice;\n var array_splice = ArrayPrototype.splice;\n var array_push = ArrayPrototype.push;\n var array_unshift = ArrayPrototype.unshift;\n var array_concat = ArrayPrototype.concat;\n var array_join = ArrayPrototype.join;\n var call = FunctionPrototype.call;\n var apply = FunctionPrototype.apply;\n var max = Math.max;\n var min = Math.min;\n\n // Having a toString local variable name breaks in Opera so use to_string.\n var to_string = ObjectPrototype.toString;\n\n /* global Symbol */\n /* eslint-disable one-var-declaration-per-line, no-redeclare, max-statements-per-line */\n var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';\n var isCallable; /* inlined from https://npmjs.com/is-callable */ var fnToStr = Function.prototype.toString, constructorRegex = /^\\s*class /, isES6ClassFn = function isES6ClassFn(value) { try { var fnStr = fnToStr.call(value); var singleStripped = fnStr.replace(/\\/\\/.*\\n/g, ''); var multiStripped = singleStripped.replace(/\\/\\*[.\\s\\S]*\\*\\//g, ''); var spaceStripped = multiStripped.replace(/\\n/mg, ' ').replace(/ {2}/g, ' '); return constructorRegex.test(spaceStripped); } catch (e) { return false; /* not a function */ } }, tryFunctionObject = function tryFunctionObject(value) { try { if (isES6ClassFn(value)) { return false; } fnToStr.call(value); return true; } catch (e) { return false; } }, fnClass = '[object Function]', genClass = '[object GeneratorFunction]', isCallable = function isCallable(value) { if (!value) { return false; } if (typeof value !== 'function' && typeof value !== 'object') { return false; } if (hasToStringTag) { return tryFunctionObject(value); } if (isES6ClassFn(value)) { return false; } var strClass = to_string.call(value); return strClass === fnClass || strClass === genClass; };\n\n var isRegex; /* inlined from https://npmjs.com/is-regex */ var regexExec = RegExp.prototype.exec, tryRegexExec = function tryRegexExec(value) { try { regexExec.call(value); return true; } catch (e) { return false; } }, regexClass = '[object RegExp]'; isRegex = function isRegex(value) { if (typeof value !== 'object') { return false; } return hasToStringTag ? tryRegexExec(value) : to_string.call(value) === regexClass; };\n var isString; /* inlined from https://npmjs.com/is-string */ var strValue = String.prototype.valueOf, tryStringObject = function tryStringObject(value) { try { strValue.call(value); return true; } catch (e) { return false; } }, stringClass = '[object String]'; isString = function isString(value) { if (typeof value === 'string') { return true; } if (typeof value !== 'object') { return false; } return hasToStringTag ? tryStringObject(value) : to_string.call(value) === stringClass; };\n /* eslint-enable one-var-declaration-per-line, no-redeclare, max-statements-per-line */\n\n /* inlined from http://npmjs.com/define-properties */\n var supportsDescriptors = $Object.defineProperty && (function () {\n try {\n var obj = {};\n $Object.defineProperty(obj, 'x', { enumerable: false, value: obj });\n for (var _ in obj) { // jscs:ignore disallowUnusedVariables\n return false;\n }\n return obj.x === obj;\n } catch (e) { /* this is ES3 */\n return false;\n }\n }());\n var defineProperties = (function (has) {\n // Define configurable, writable, and non-enumerable props\n // if they don't exist.\n var defineProperty;\n if (supportsDescriptors) {\n defineProperty = function (object, name, method, forceAssign) {\n if (!forceAssign && (name in object)) {\n return;\n }\n $Object.defineProperty(object, name, {\n configurable: true,\n enumerable: false,\n writable: true,\n value: method\n });\n };\n } else {\n defineProperty = function (object, name, method, forceAssign) {\n if (!forceAssign && (name in object)) {\n return;\n }\n object[name] = method;\n };\n }\n return function defineProperties(object, map, forceAssign) {\n for (var name in map) {\n if (has.call(map, name)) {\n defineProperty(object, name, map[name], forceAssign);\n }\n }\n };\n }(ObjectPrototype.hasOwnProperty));\n\n //\n // Util\n // ======\n //\n\n /* replaceable with https://npmjs.com/package/es-abstract /helpers/isPrimitive */\n var isPrimitive = function isPrimitive(input) {\n var type = typeof input;\n return input === null || (type !== 'object' && type !== 'function');\n };\n\n var isActualNaN = $Number.isNaN || function isActualNaN(x) {\n return x !== x;\n };\n\n var ES = {\n // ES5 9.4\n // http://es5.github.com/#x9.4\n // http://jsperf.com/to-integer\n /* replaceable with https://npmjs.com/package/es-abstract ES5.ToInteger */\n ToInteger: function ToInteger(num) {\n var n = +num;\n if (isActualNaN(n)) {\n n = 0;\n } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {\n n = (n > 0 || -1) * Math.floor(Math.abs(n));\n }\n return n;\n },\n\n /* replaceable with https://npmjs.com/package/es-abstract ES5.ToPrimitive */\n ToPrimitive: function ToPrimitive(input) {\n var val, valueOf, toStr;\n if (isPrimitive(input)) {\n return input;\n }\n valueOf = input.valueOf;\n if (isCallable(valueOf)) {\n val = valueOf.call(input);\n if (isPrimitive(val)) {\n return val;\n }\n }\n toStr = input.toString;\n if (isCallable(toStr)) {\n val = toStr.call(input);\n if (isPrimitive(val)) {\n return val;\n }\n }\n throw new TypeError();\n },\n\n // ES5 9.9\n // http://es5.github.com/#x9.9\n /* replaceable with https://npmjs.com/package/es-abstract ES5.ToObject */\n ToObject: function (o) {\n if (o == null) { // this matches both null and undefined\n throw new TypeError(\"can't convert \" + o + ' to object');\n }\n return $Object(o);\n },\n\n /* replaceable with https://npmjs.com/package/es-abstract ES5.ToUint32 */\n ToUint32: function ToUint32(x) {\n return x >>> 0;\n }\n };\n\n //\n // Function\n // ========\n //\n\n // ES-5 15.3.4.5\n // http://es5.github.com/#x15.3.4.5\n\n var Empty = function Empty() {};\n\n defineProperties(FunctionPrototype, {\n bind: function bind(that) { // .length is 1\n // 1. Let Target be the this value.\n var target = this;\n // 2. If IsCallable(Target) is false, throw a TypeError exception.\n if (!isCallable(target)) {\n throw new TypeError('Function.prototype.bind called on incompatible ' + target);\n }\n // 3. Let A be a new (possibly empty) internal list of all of the\n // argument values provided after thisArg (arg1, arg2 etc), in order.\n // XXX slicedArgs will stand in for \"A\" if used\n var args = array_slice.call(arguments, 1); // for normal call\n // 4. Let F be a new native ECMAScript object.\n // 11. Set the [[Prototype]] internal property of F to the standard\n // built-in Function prototype object as specified in 15.3.3.1.\n // 12. Set the [[Call]] internal property of F as described in\n // 15.3.4.5.1.\n // 13. Set the [[Construct]] internal property of F as described in\n // 15.3.4.5.2.\n // 14. Set the [[HasInstance]] internal property of F as described in\n // 15.3.4.5.3.\n var bound;\n var binder = function () {\n\n if (this instanceof bound) {\n // 15.3.4.5.2 [[Construct]]\n // When the [[Construct]] internal method of a function object,\n // F that was created using the bind function is called with a\n // list of arguments ExtraArgs, the following steps are taken:\n // 1. Let target be the value of F's [[TargetFunction]]\n // internal property.\n // 2. If target has no [[Construct]] internal method, a\n // TypeError exception is thrown.\n // 3. Let boundArgs be the value of F's [[BoundArgs]] internal\n // property.\n // 4. Let args be a new list containing the same values as the\n // list boundArgs in the same order followed by the same\n // values as the list ExtraArgs in the same order.\n // 5. Return the result of calling the [[Construct]] internal\n // method of target providing args as the arguments.\n\n var result = apply.call(\n target,\n this,\n array_concat.call(args, array_slice.call(arguments))\n );\n if ($Object(result) === result) {\n return result;\n }\n return this;\n\n } else {\n // 15.3.4.5.1 [[Call]]\n // When the [[Call]] internal method of a function object, F,\n // which was created using the bind function is called with a\n // this value and a list of arguments ExtraArgs, the following\n // steps are taken:\n // 1. Let boundArgs be the value of F's [[BoundArgs]] internal\n // property.\n // 2. Let boundThis be the value of F's [[BoundThis]] internal\n // property.\n // 3. Let target be the value of F's [[TargetFunction]] internal\n // property.\n // 4. Let args be a new list containing the same values as the\n // list boundArgs in the same order followed by the same\n // values as the list ExtraArgs in the same order.\n // 5. Return the result of calling the [[Call]] internal method\n // of target providing boundThis as the this value and\n // providing args as the arguments.\n\n // equiv: target.call(this, ...boundArgs, ...args)\n return apply.call(\n target,\n that,\n array_concat.call(args, array_slice.call(arguments))\n );\n\n }\n\n };\n\n // 15. If the [[Class]] internal property of Target is \"Function\", then\n // a. Let L be the length property of Target minus the length of A.\n // b. Set the length own property of F to either 0 or L, whichever is\n // larger.\n // 16. Else set the length own property of F to 0.\n\n var boundLength = max(0, target.length - args.length);\n\n // 17. Set the attributes of the length own property of F to the values\n // specified in 15.3.5.1.\n var boundArgs = [];\n for (var i = 0; i < boundLength; i++) {\n array_push.call(boundArgs, '$' + i);\n }\n\n // XXX Build a dynamic function with desired amount of arguments is the only\n // way to set the length property of a function.\n // In environments where Content Security Policies enabled (Chrome extensions,\n // for ex.) all use of eval or Function costructor throws an exception.\n // However in all of these environments Function.prototype.bind exists\n // and so this code will never be executed.\n bound = $Function('binder', 'return function (' + array_join.call(boundArgs, ',') + '){ return binder.apply(this, arguments); }')(binder);\n\n if (target.prototype) {\n Empty.prototype = target.prototype;\n bound.prototype = new Empty();\n // Clean up dangling references.\n Empty.prototype = null;\n }\n\n // TODO\n // 18. Set the [[Extensible]] internal property of F to true.\n\n // TODO\n // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).\n // 20. Call the [[DefineOwnProperty]] internal method of F with\n // arguments \"caller\", PropertyDescriptor {[[Get]]: thrower, [[Set]]:\n // thrower, [[Enumerable]]: false, [[Configurable]]: false}, and\n // false.\n // 21. Call the [[DefineOwnProperty]] internal method of F with\n // arguments \"arguments\", PropertyDescriptor {[[Get]]: thrower,\n // [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},\n // and false.\n\n // TODO\n // NOTE Function objects created using Function.prototype.bind do not\n // have a prototype property or the [[Code]], [[FormalParameters]], and\n // [[Scope]] internal properties.\n // XXX can't delete prototype in pure-js.\n\n // 22. Return F.\n return bound;\n }\n });\n\n // _Please note: Shortcuts are defined after `Function.prototype.bind` as we\n // use it in defining shortcuts.\n var owns = call.bind(ObjectPrototype.hasOwnProperty);\n var toStr = call.bind(ObjectPrototype.toString);\n var arraySlice = call.bind(array_slice);\n var arraySliceApply = apply.bind(array_slice);\n /* globals document */\n if (typeof document === 'object' && document && document.documentElement) {\n try {\n arraySlice(document.documentElement.childNodes);\n } catch (e) {\n var origArraySlice = arraySlice;\n var origArraySliceApply = arraySliceApply;\n arraySlice = function arraySliceIE(arr) {\n var r = [];\n var i = arr.length;\n while (i-- > 0) {\n r[i] = arr[i];\n }\n return origArraySliceApply(r, origArraySlice(arguments, 1));\n };\n arraySliceApply = function arraySliceApplyIE(arr, args) {\n return origArraySliceApply(arraySlice(arr), args);\n };\n }\n }\n var strSlice = call.bind(StringPrototype.slice);\n var strSplit = call.bind(StringPrototype.split);\n var strIndexOf = call.bind(StringPrototype.indexOf);\n var pushCall = call.bind(array_push);\n var isEnum = call.bind(ObjectPrototype.propertyIsEnumerable);\n var arraySort = call.bind(ArrayPrototype.sort);\n\n //\n // Array\n // =====\n //\n\n var isArray = $Array.isArray || function isArray(obj) {\n return toStr(obj) === '[object Array]';\n };\n\n // ES5 15.4.4.12\n // http://es5.github.com/#x15.4.4.13\n // Return len+argCount.\n // [bugfix, ielt8]\n // IE < 8 bug: [].unshift(0) === undefined but should be \"1\"\n var hasUnshiftReturnValueBug = [].unshift(0) !== 1;\n defineProperties(ArrayPrototype, {\n unshift: function () {\n array_unshift.apply(this, arguments);\n return this.length;\n }\n }, hasUnshiftReturnValueBug);\n\n // ES5 15.4.3.2\n // http://es5.github.com/#x15.4.3.2\n // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray\n defineProperties($Array, { isArray: isArray });\n\n // The IsCallable() check in the Array functions\n // has been replaced with a strict check on the\n // internal class of the object to trap cases where\n // the provided function was actually a regular\n // expression literal, which in V8 and\n // JavaScriptCore is a typeof \"function\". Only in\n // V8 are regular expression literals permitted as\n // reduce parameters, so it is desirable in the\n // general case for the shim to match the more\n // strict and common behavior of rejecting regular\n // expressions.\n\n // ES5 15.4.4.18\n // http://es5.github.com/#x15.4.4.18\n // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/forEach\n\n // Check failure of by-index access of string characters (IE < 9)\n // and failure of `0 in boxedString` (Rhino)\n var boxedString = $Object('a');\n var splitString = boxedString[0] !== 'a' || !(0 in boxedString);\n\n var properlyBoxesContext = function properlyBoxed(method) {\n // Check node 0.6.21 bug where third parameter is not boxed\n var properlyBoxesNonStrict = true;\n var properlyBoxesStrict = true;\n var threwException = false;\n if (method) {\n try {\n method.call('foo', function (_, __, context) {\n if (typeof context !== 'object') {\n properlyBoxesNonStrict = false;\n }\n });\n\n method.call([1], function () {\n 'use strict';\n\n properlyBoxesStrict = typeof this === 'string';\n }, 'x');\n } catch (e) {\n threwException = true;\n }\n }\n return !!method && !threwException && properlyBoxesNonStrict && properlyBoxesStrict;\n };\n\n defineProperties(ArrayPrototype, {\n forEach: function forEach(callbackfn/*, thisArg*/) {\n var object = ES.ToObject(this);\n var self = splitString && isString(this) ? strSplit(this, '') : object;\n var i = -1;\n var length = ES.ToUint32(self.length);\n var T;\n if (arguments.length > 1) {\n T = arguments[1];\n }\n\n // If no callback function or if callback is not a callable function\n if (!isCallable(callbackfn)) {\n throw new TypeError('Array.prototype.forEach callback must be a function');\n }\n\n while (++i < length) {\n if (i in self) {\n // Invoke the callback function with call, passing arguments:\n // context, property value, property key, thisArg object\n if (typeof T === 'undefined') {\n callbackfn(self[i], i, object);\n } else {\n callbackfn.call(T, self[i], i, object);\n }\n }\n }\n }\n }, !properlyBoxesContext(ArrayPrototype.forEach));\n\n // ES5 15.4.4.19\n // http://es5.github.com/#x15.4.4.19\n // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map\n defineProperties(ArrayPrototype, {\n map: function map(callbackfn/*, thisArg*/) {\n var object = ES.ToObject(this);\n var self = splitString && isString(this) ? strSplit(this, '') : object;\n var length = ES.ToUint32(self.length);\n var result = $Array(length);\n var T;\n if (arguments.length > 1) {\n T = arguments[1];\n }\n\n // If no callback function or if callback is not a callable function\n if (!isCallable(callbackfn)) {\n throw new TypeError('Array.prototype.map callback must be a function');\n }\n\n for (var i = 0; i < length; i++) {\n if (i in self) {\n if (typeof T === 'undefined') {\n result[i] = callbackfn(self[i], i, object);\n } else {\n result[i] = callbackfn.call(T, self[i], i, object);\n }\n }\n }\n return result;\n }\n }, !properlyBoxesContext(ArrayPrototype.map));\n\n // ES5 15.4.4.20\n // http://es5.github.com/#x15.4.4.20\n // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter\n defineProperties(ArrayPrototype, {\n filter: function filter(callbackfn/*, thisArg*/) {\n var object = ES.ToObject(this);\n var self = splitString && isString(this) ? strSplit(this, '') : object;\n var length = ES.ToUint32(self.length);\n var result = [];\n var value;\n var T;\n if (arguments.length > 1) {\n T = arguments[1];\n }\n\n // If no callback function or if callback is not a callable function\n if (!isCallable(callbackfn)) {\n throw new TypeError('Array.prototype.filter callback must be a function');\n }\n\n for (var i = 0; i < length; i++) {\n if (i in self) {\n value = self[i];\n if (typeof T === 'undefined' ? callbackfn(value, i, object) : callbackfn.call(T, value, i, object)) {\n pushCall(result, value);\n }\n }\n }\n return result;\n }\n }, !properlyBoxesContext(ArrayPrototype.filter));\n\n // ES5 15.4.4.16\n // http://es5.github.com/#x15.4.4.16\n // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every\n defineProperties(ArrayPrototype, {\n every: function every(callbackfn/*, thisArg*/) {\n var object = ES.ToObject(this);\n var self = splitString && isString(this) ? strSplit(this, '') : object;\n var length = ES.ToUint32(self.length);\n var T;\n if (arguments.length > 1) {\n T = arguments[1];\n }\n\n // If no callback function or if callback is not a callable function\n if (!isCallable(callbackfn)) {\n throw new TypeError('Array.prototype.every callback must be a function');\n }\n\n for (var i = 0; i < length; i++) {\n if (i in self && !(typeof T === 'undefined' ? callbackfn(self[i], i, object) : callbackfn.call(T, self[i], i, object))) {\n return false;\n }\n }\n return true;\n }\n }, !properlyBoxesContext(ArrayPrototype.every));\n\n // ES5 15.4.4.17\n // http://es5.github.com/#x15.4.4.17\n // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some\n defineProperties(ArrayPrototype, {\n some: function some(callbackfn/*, thisArg */) {\n var object = ES.ToObject(this);\n var self = splitString && isString(this) ? strSplit(this, '') : object;\n var length = ES.ToUint32(self.length);\n var T;\n if (arguments.length > 1) {\n T = arguments[1];\n }\n\n // If no callback function or if callback is not a callable function\n if (!isCallable(callbackfn)) {\n throw new TypeError('Array.prototype.some callback must be a function');\n }\n\n for (var i = 0; i < length; i++) {\n if (i in self && (typeof T === 'undefined' ? callbackfn(self[i], i, object) : callbackfn.call(T, self[i], i, object))) {\n return true;\n }\n }\n return false;\n }\n }, !properlyBoxesContext(ArrayPrototype.some));\n\n // ES5 15.4.4.21\n // http://es5.github.com/#x15.4.4.21\n // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce\n var reduceCoercesToObject = false;\n if (ArrayPrototype.reduce) {\n reduceCoercesToObject = typeof ArrayPrototype.reduce.call('es5', function (_, __, ___, list) {\n return list;\n }) === 'object';\n }\n defineProperties(ArrayPrototype, {\n reduce: function reduce(callbackfn/*, initialValue*/) {\n var object = ES.ToObject(this);\n var self = splitString && isString(this) ? strSplit(this, '') : object;\n var length = ES.ToUint32(self.length);\n\n // If no callback function or if callback is not a callable function\n if (!isCallable(callbackfn)) {\n throw new TypeError('Array.prototype.reduce callback must be a function');\n }\n\n // no value to return if no initial value and an empty array\n if (length === 0 && arguments.length === 1) {\n throw new TypeError('reduce of empty array with no initial value');\n }\n\n var i = 0;\n var result;\n if (arguments.length >= 2) {\n result = arguments[1];\n } else {\n do {\n if (i in self) {\n result = self[i++];\n break;\n }\n\n // if array contains no values, no initial value to return\n if (++i >= length) {\n throw new TypeError('reduce of empty array with no initial value');\n }\n } while (true);\n }\n\n for (; i < length; i++) {\n if (i in self) {\n result = callbackfn(result, self[i], i, object);\n }\n }\n\n return result;\n }\n }, !reduceCoercesToObject);\n\n // ES5 15.4.4.22\n // http://es5.github.com/#x15.4.4.22\n // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight\n var reduceRightCoercesToObject = false;\n if (ArrayPrototype.reduceRight) {\n reduceRightCoercesToObject = typeof ArrayPrototype.reduceRight.call('es5', function (_, __, ___, list) {\n return list;\n }) === 'object';\n }\n defineProperties(ArrayPrototype, {\n reduceRight: function reduceRight(callbackfn/*, initial*/) {\n var object = ES.ToObject(this);\n var self = splitString && isString(this) ? strSplit(this, '') : object;\n var length = ES.ToUint32(self.length);\n\n // If no callback function or if callback is not a callable function\n if (!isCallable(callbackfn)) {\n throw new TypeError('Array.prototype.reduceRight callback must be a function');\n }\n\n // no value to return if no initial value, empty array\n if (length === 0 && arguments.length === 1) {\n throw new TypeError('reduceRight of empty array with no initial value');\n }\n\n var result;\n var i = length - 1;\n if (arguments.length >= 2) {\n result = arguments[1];\n } else {\n do {\n if (i in self) {\n result = self[i--];\n break;\n }\n\n // if array contains no values, no initial value to return\n if (--i < 0) {\n throw new TypeError('reduceRight of empty array with no initial value');\n }\n } while (true);\n }\n\n if (i < 0) {\n return result;\n }\n\n do {\n if (i in self) {\n result = callbackfn(result, self[i], i, object);\n }\n } while (i--);\n\n return result;\n }\n }, !reduceRightCoercesToObject);\n\n // ES5 15.4.4.14\n // http://es5.github.com/#x15.4.4.14\n // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf\n var hasFirefox2IndexOfBug = ArrayPrototype.indexOf && [0, 1].indexOf(1, 2) !== -1;\n defineProperties(ArrayPrototype, {\n indexOf: function indexOf(searchElement/*, fromIndex */) {\n var self = splitString && isString(this) ? strSplit(this, '') : ES.ToObject(this);\n var length = ES.ToUint32(self.length);\n\n if (length === 0) {\n return -1;\n }\n\n var i = 0;\n if (arguments.length > 1) {\n i = ES.ToInteger(arguments[1]);\n }\n\n // handle negative indices\n i = i >= 0 ? i : max(0, length + i);\n for (; i < length; i++) {\n if (i in self && self[i] === searchElement) {\n return i;\n }\n }\n return -1;\n }\n }, hasFirefox2IndexOfBug);\n\n // ES5 15.4.4.15\n // http://es5.github.com/#x15.4.4.15\n // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf\n var hasFirefox2LastIndexOfBug = ArrayPrototype.lastIndexOf && [0, 1].lastIndexOf(0, -3) !== -1;\n defineProperties(ArrayPrototype, {\n lastIndexOf: function lastIndexOf(searchElement/*, fromIndex */) {\n var self = splitString && isString(this) ? strSplit(this, '') : ES.ToObject(this);\n var length = ES.ToUint32(self.length);\n\n if (length === 0) {\n return -1;\n }\n var i = length - 1;\n if (arguments.length > 1) {\n i = min(i, ES.ToInteger(arguments[1]));\n }\n // handle negative indices\n i = i >= 0 ? i : length - Math.abs(i);\n for (; i >= 0; i--) {\n if (i in self && searchElement === self[i]) {\n return i;\n }\n }\n return -1;\n }\n }, hasFirefox2LastIndexOfBug);\n\n // ES5 15.4.4.12\n // http://es5.github.com/#x15.4.4.12\n var spliceNoopReturnsEmptyArray = (function () {\n var a = [1, 2];\n var result = a.splice();\n return a.length === 2 && isArray(result) && result.length === 0;\n }());\n defineProperties(ArrayPrototype, {\n // Safari 5.0 bug where .splice() returns undefined\n splice: function splice(start, deleteCount) {\n if (arguments.length === 0) {\n return [];\n } else {\n return array_splice.apply(this, arguments);\n }\n }\n }, !spliceNoopReturnsEmptyArray);\n\n var spliceWorksWithEmptyObject = (function () {\n var obj = {};\n ArrayPrototype.splice.call(obj, 0, 0, 1);\n return obj.length === 1;\n }());\n defineProperties(ArrayPrototype, {\n splice: function splice(start, deleteCount) {\n if (arguments.length === 0) {\n return [];\n }\n var args = arguments;\n this.length = max(ES.ToInteger(this.length), 0);\n if (arguments.length > 0 && typeof deleteCount !== 'number') {\n args = arraySlice(arguments);\n if (args.length < 2) {\n pushCall(args, this.length - start);\n } else {\n args[1] = ES.ToInteger(deleteCount);\n }\n }\n return array_splice.apply(this, args);\n }\n }, !spliceWorksWithEmptyObject);\n var spliceWorksWithLargeSparseArrays = (function () {\n // Per https://github.com/es-shims/es5-shim/issues/295\n // Safari 7/8 breaks with sparse arrays of size 1e5 or greater\n var arr = new $Array(1e5);\n // note: the index MUST be 8 or larger or the test will false pass\n arr[8] = 'x';\n arr.splice(1, 1);\n // note: this test must be defined *after* the indexOf shim\n // per https://github.com/es-shims/es5-shim/issues/313\n return arr.indexOf('x') === 7;\n }());\n var spliceWorksWithSmallSparseArrays = (function () {\n // Per https://github.com/es-shims/es5-shim/issues/295\n // Opera 12.15 breaks on this, no idea why.\n var n = 256;\n var arr = [];\n arr[n] = 'a';\n arr.splice(n + 1, 0, 'b');\n return arr[n] === 'a';\n }());\n defineProperties(ArrayPrototype, {\n splice: function splice(start, deleteCount) {\n var O = ES.ToObject(this);\n var A = [];\n var len = ES.ToUint32(O.length);\n var relativeStart = ES.ToInteger(start);\n var actualStart = relativeStart < 0 ? max((len + relativeStart), 0) : min(relativeStart, len);\n var actualDeleteCount = min(max(ES.ToInteger(deleteCount), 0), len - actualStart);\n\n var k = 0;\n var from;\n while (k < actualDeleteCount) {\n from = $String(actualStart + k);\n if (owns(O, from)) {\n A[k] = O[from];\n }\n k += 1;\n }\n\n var items = arraySlice(arguments, 2);\n var itemCount = items.length;\n var to;\n if (itemCount < actualDeleteCount) {\n k = actualStart;\n var maxK = len - actualDeleteCount;\n while (k < maxK) {\n from = $String(k + actualDeleteCount);\n to = $String(k + itemCount);\n if (owns(O, from)) {\n O[to] = O[from];\n } else {\n delete O[to];\n }\n k += 1;\n }\n k = len;\n var minK = len - actualDeleteCount + itemCount;\n while (k > minK) {\n delete O[k - 1];\n k -= 1;\n }\n } else if (itemCount > actualDeleteCount) {\n k = len - actualDeleteCount;\n while (k > actualStart) {\n from = $String(k + actualDeleteCount - 1);\n to = $String(k + itemCount - 1);\n if (owns(O, from)) {\n O[to] = O[from];\n } else {\n delete O[to];\n }\n k -= 1;\n }\n }\n k = actualStart;\n for (var i = 0; i < items.length; ++i) {\n O[k] = items[i];\n k += 1;\n }\n O.length = len - actualDeleteCount + itemCount;\n\n return A;\n }\n }, !spliceWorksWithLargeSparseArrays || !spliceWorksWithSmallSparseArrays);\n\n var originalJoin = ArrayPrototype.join;\n var hasStringJoinBug;\n try {\n hasStringJoinBug = Array.prototype.join.call('123', ',') !== '1,2,3';\n } catch (e) {\n hasStringJoinBug = true;\n }\n if (hasStringJoinBug) {\n defineProperties(ArrayPrototype, {\n join: function join(separator) {\n var sep = typeof separator === 'undefined' ? ',' : separator;\n return originalJoin.call(isString(this) ? strSplit(this, '') : this, sep);\n }\n }, hasStringJoinBug);\n }\n\n var hasJoinUndefinedBug = [1, 2].join(undefined) !== '1,2';\n if (hasJoinUndefinedBug) {\n defineProperties(ArrayPrototype, {\n join: function join(separator) {\n var sep = typeof separator === 'undefined' ? ',' : separator;\n return originalJoin.call(this, sep);\n }\n }, hasJoinUndefinedBug);\n }\n\n var pushShim = function push(item) {\n var O = ES.ToObject(this);\n var n = ES.ToUint32(O.length);\n var i = 0;\n while (i < arguments.length) {\n O[n + i] = arguments[i];\n i += 1;\n }\n O.length = n + i;\n return n + i;\n };\n\n var pushIsNotGeneric = (function () {\n var obj = {};\n var result = Array.prototype.push.call(obj, undefined);\n return result !== 1 || obj.length !== 1 || typeof obj[0] !== 'undefined' || !owns(obj, 0);\n }());\n defineProperties(ArrayPrototype, {\n push: function push(item) {\n if (isArray(this)) {\n return array_push.apply(this, arguments);\n }\n return pushShim.apply(this, arguments);\n }\n }, pushIsNotGeneric);\n\n // This fixes a very weird bug in Opera 10.6 when pushing `undefined\n var pushUndefinedIsWeird = (function () {\n var arr = [];\n var result = arr.push(undefined);\n return result !== 1 || arr.length !== 1 || typeof arr[0] !== 'undefined' || !owns(arr, 0);\n }());\n defineProperties(ArrayPrototype, { push: pushShim }, pushUndefinedIsWeird);\n\n // ES5 15.2.3.14\n // http://es5.github.io/#x15.4.4.10\n // Fix boxed string bug\n defineProperties(ArrayPrototype, {\n slice: function (start, end) {\n var arr = isString(this) ? strSplit(this, '') : this;\n return arraySliceApply(arr, arguments);\n }\n }, splitString);\n\n var sortIgnoresNonFunctions = (function () {\n try {\n [1, 2].sort(null);\n } catch (e) {\n try {\n [1, 2].sort({});\n } catch (e2) {\n return false;\n }\n }\n return true;\n }());\n var sortThrowsOnRegex = (function () {\n // this is a problem in Firefox 4, in which `typeof /a/ === 'function'`\n try {\n [1, 2].sort(/a/);\n return false;\n } catch (e) {}\n return true;\n }());\n var sortIgnoresUndefined = (function () {\n // applies in IE 8, for one.\n try {\n [1, 2].sort(undefined);\n return true;\n } catch (e) {}\n return false;\n }());\n defineProperties(ArrayPrototype, {\n sort: function sort(compareFn) {\n if (typeof compareFn === 'undefined') {\n return arraySort(this);\n }\n if (!isCallable(compareFn)) {\n throw new TypeError('Array.prototype.sort callback must be a function');\n }\n return arraySort(this, compareFn);\n }\n }, sortIgnoresNonFunctions || !sortIgnoresUndefined || !sortThrowsOnRegex);\n\n //\n // Object\n // ======\n //\n\n // ES5 15.2.3.14\n // http://es5.github.com/#x15.2.3.14\n\n // http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation\n var hasDontEnumBug = !isEnum({ 'toString': null }, 'toString'); // jscs:ignore disallowQuotedKeysInObjects\n var hasProtoEnumBug = isEnum(function () {}, 'prototype');\n var hasStringEnumBug = !owns('x', '0');\n var equalsConstructorPrototype = function (o) {\n var ctor = o.constructor;\n return ctor && ctor.prototype === o;\n };\n var excludedKeys = {\n $applicationCache: true,\n $console: true,\n $external: true,\n $frame: true,\n $frameElement: true,\n $frames: true,\n $innerHeight: true,\n $innerWidth: true,\n $outerHeight: true,\n $outerWidth: true,\n $pageXOffset: true,\n $pageYOffset: true,\n $parent: true,\n $scrollLeft: true,\n $scrollTop: true,\n $scrollX: true,\n $scrollY: true,\n $self: true,\n $webkitIndexedDB: true,\n $webkitStorageInfo: true,\n $window: true,\n\n $width: true,\n $height: true,\n $top: true,\n $localStorage: true\n };\n var hasAutomationEqualityBug = (function () {\n /* globals window */\n if (typeof window === 'undefined') {\n return false;\n }\n for (var k in window) {\n try {\n if (!excludedKeys['$' + k] && owns(window, k) && window[k] !== null && typeof window[k] === 'object') {\n equalsConstructorPrototype(window[k]);\n }\n } catch (e) {\n return true;\n }\n }\n return false;\n }());\n var equalsConstructorPrototypeIfNotBuggy = function (object) {\n if (typeof window === 'undefined' || !hasAutomationEqualityBug) {\n return equalsConstructorPrototype(object);\n }\n try {\n return equalsConstructorPrototype(object);\n } catch (e) {\n return false;\n }\n };\n var dontEnums = [\n 'toString',\n 'toLocaleString',\n 'valueOf',\n 'hasOwnProperty',\n 'isPrototypeOf',\n 'propertyIsEnumerable',\n 'constructor'\n ];\n var dontEnumsLength = dontEnums.length;\n\n // taken directly from https://github.com/ljharb/is-arguments/blob/master/index.js\n // can be replaced with require('is-arguments') if we ever use a build process instead\n var isStandardArguments = function isArguments(value) {\n return toStr(value) === '[object Arguments]';\n };\n var isLegacyArguments = function isArguments(value) {\n return value !== null\n && typeof value === 'object'\n && typeof value.length === 'number'\n && value.length >= 0\n && !isArray(value)\n && isCallable(value.callee);\n };\n var isArguments = isStandardArguments(arguments) ? isStandardArguments : isLegacyArguments;\n\n defineProperties($Object, {\n keys: function keys(object) {\n var isFn = isCallable(object);\n var isArgs = isArguments(object);\n var isObject = object !== null && typeof object === 'object';\n var isStr = isObject && isString(object);\n\n if (!isObject && !isFn && !isArgs) {\n throw new TypeError('Object.keys called on a non-object');\n }\n\n var theKeys = [];\n var skipProto = hasProtoEnumBug && isFn;\n if ((isStr && hasStringEnumBug) || isArgs) {\n for (var i = 0; i < object.length; ++i) {\n pushCall(theKeys, $String(i));\n }\n }\n\n if (!isArgs) {\n for (var name in object) {\n if (!(skipProto && name === 'prototype') && owns(object, name)) {\n pushCall(theKeys, $String(name));\n }\n }\n }\n\n if (hasDontEnumBug) {\n var skipConstructor = equalsConstructorPrototypeIfNotBuggy(object);\n for (var j = 0; j < dontEnumsLength; j++) {\n var dontEnum = dontEnums[j];\n if (!(skipConstructor && dontEnum === 'constructor') && owns(object, dontEnum)) {\n pushCall(theKeys, dontEnum);\n }\n }\n }\n return theKeys;\n }\n });\n\n var keysWorksWithArguments = $Object.keys && (function () {\n // Safari 5.0 bug\n return $Object.keys(arguments).length === 2;\n }(1, 2));\n var keysHasArgumentsLengthBug = $Object.keys && (function () {\n var argKeys = $Object.keys(arguments);\n return arguments.length !== 1 || argKeys.length !== 1 || argKeys[0] !== 1;\n }(1));\n var originalKeys = $Object.keys;\n defineProperties($Object, {\n keys: function keys(object) {\n if (isArguments(object)) {\n return originalKeys(arraySlice(object));\n } else {\n return originalKeys(object);\n }\n }\n }, !keysWorksWithArguments || keysHasArgumentsLengthBug);\n\n //\n // Date\n // ====\n //\n\n var hasNegativeMonthYearBug = new Date(-3509827329600292).getUTCMonth() !== 0;\n var aNegativeTestDate = new Date(-1509842289600292);\n var aPositiveTestDate = new Date(1449662400000);\n var hasToUTCStringFormatBug = aNegativeTestDate.toUTCString() !== 'Mon, 01 Jan -45875 11:59:59 GMT';\n var hasToDateStringFormatBug;\n var hasToStringFormatBug;\n var timeZoneOffset = aNegativeTestDate.getTimezoneOffset();\n if (timeZoneOffset < -720) {\n hasToDateStringFormatBug = aNegativeTestDate.toDateString() !== 'Tue Jan 02 -45875';\n hasToStringFormatBug = !(/^Thu Dec 10 2015 \\d\\d:\\d\\d:\\d\\d GMT[-+]\\d\\d\\d\\d(?: |$)/).test(String(aPositiveTestDate));\n } else {\n hasToDateStringFormatBug = aNegativeTestDate.toDateString() !== 'Mon Jan 01 -45875';\n hasToStringFormatBug = !(/^Wed Dec 09 2015 \\d\\d:\\d\\d:\\d\\d GMT[-+]\\d\\d\\d\\d(?: |$)/).test(String(aPositiveTestDate));\n }\n\n var originalGetFullYear = call.bind(Date.prototype.getFullYear);\n var originalGetMonth = call.bind(Date.prototype.getMonth);\n var originalGetDate = call.bind(Date.prototype.getDate);\n var originalGetUTCFullYear = call.bind(Date.prototype.getUTCFullYear);\n var originalGetUTCMonth = call.bind(Date.prototype.getUTCMonth);\n var originalGetUTCDate = call.bind(Date.prototype.getUTCDate);\n var originalGetUTCDay = call.bind(Date.prototype.getUTCDay);\n var originalGetUTCHours = call.bind(Date.prototype.getUTCHours);\n var originalGetUTCMinutes = call.bind(Date.prototype.getUTCMinutes);\n var originalGetUTCSeconds = call.bind(Date.prototype.getUTCSeconds);\n var originalGetUTCMilliseconds = call.bind(Date.prototype.getUTCMilliseconds);\n var dayName = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];\n var monthName = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];\n var daysInMonth = function daysInMonth(month, year) {\n return originalGetDate(new Date(year, month, 0));\n };\n\n defineProperties(Date.prototype, {\n getFullYear: function getFullYear() {\n if (!this || !(this instanceof Date)) {\n throw new TypeError('this is not a Date object.');\n }\n var year = originalGetFullYear(this);\n if (year < 0 && originalGetMonth(this) > 11) {\n return year + 1;\n }\n return year;\n },\n getMonth: function getMonth() {\n if (!this || !(this instanceof Date)) {\n throw new TypeError('this is not a Date object.');\n }\n var year = originalGetFullYear(this);\n var month = originalGetMonth(this);\n if (year < 0 && month > 11) {\n return 0;\n }\n return month;\n },\n getDate: function getDate() {\n if (!this || !(this instanceof Date)) {\n throw new TypeError('this is not a Date object.');\n }\n var year = originalGetFullYear(this);\n var month = originalGetMonth(this);\n var date = originalGetDate(this);\n if (year < 0 && month > 11) {\n if (month === 12) {\n return date;\n }\n var days = daysInMonth(0, year + 1);\n return (days - date) + 1;\n }\n return date;\n },\n getUTCFullYear: function getUTCFullYear() {\n if (!this || !(this instanceof Date)) {\n throw new TypeError('this is not a Date object.');\n }\n var year = originalGetUTCFullYear(this);\n if (year < 0 && originalGetUTCMonth(this) > 11) {\n return year + 1;\n }\n return year;\n },\n getUTCMonth: function getUTCMonth() {\n if (!this || !(this instanceof Date)) {\n throw new TypeError('this is not a Date object.');\n }\n var year = originalGetUTCFullYear(this);\n var month = originalGetUTCMonth(this);\n if (year < 0 && month > 11) {\n return 0;\n }\n return month;\n },\n getUTCDate: function getUTCDate() {\n if (!this || !(this instanceof Date)) {\n throw new TypeError('this is not a Date object.');\n }\n var year = originalGetUTCFullYear(this);\n var month = originalGetUTCMonth(this);\n var date = originalGetUTCDate(this);\n if (year < 0 && month > 11) {\n if (month === 12) {\n return date;\n }\n var days = daysInMonth(0, year + 1);\n return (days - date) + 1;\n }\n return date;\n }\n }, hasNegativeMonthYearBug);\n\n defineProperties(Date.prototype, {\n toUTCString: function toUTCString() {\n if (!this || !(this instanceof Date)) {\n throw new TypeError('this is not a Date object.');\n }\n var day = originalGetUTCDay(this);\n var date = originalGetUTCDate(this);\n var month = originalGetUTCMonth(this);\n var year = originalGetUTCFullYear(this);\n var hour = originalGetUTCHours(this);\n var minute = originalGetUTCMinutes(this);\n var second = originalGetUTCSeconds(this);\n return dayName[day] + ', '\n + (date < 10 ? '0' + date : date) + ' '\n + monthName[month] + ' '\n + year + ' '\n + (hour < 10 ? '0' + hour : hour) + ':'\n + (minute < 10 ? '0' + minute : minute) + ':'\n + (second < 10 ? '0' + second : second) + ' GMT';\n }\n }, hasNegativeMonthYearBug || hasToUTCStringFormatBug);\n\n // Opera 12 has `,`\n defineProperties(Date.prototype, {\n toDateString: function toDateString() {\n if (!this || !(this instanceof Date)) {\n throw new TypeError('this is not a Date object.');\n }\n var day = this.getDay();\n var date = this.getDate();\n var month = this.getMonth();\n var year = this.getFullYear();\n return dayName[day] + ' '\n + monthName[month] + ' '\n + (date < 10 ? '0' + date : date) + ' '\n + year;\n }\n }, hasNegativeMonthYearBug || hasToDateStringFormatBug);\n\n // can't use defineProperties here because of toString enumeration issue in IE <= 8\n if (hasNegativeMonthYearBug || hasToStringFormatBug) {\n Date.prototype.toString = function toString() {\n if (!this || !(this instanceof Date)) {\n throw new TypeError('this is not a Date object.');\n }\n var day = this.getDay();\n var date = this.getDate();\n var month = this.getMonth();\n var year = this.getFullYear();\n var hour = this.getHours();\n var minute = this.getMinutes();\n var second = this.getSeconds();\n var timezoneOffset = this.getTimezoneOffset();\n var hoursOffset = Math.floor(Math.abs(timezoneOffset) / 60);\n var minutesOffset = Math.floor(Math.abs(timezoneOffset) % 60);\n return dayName[day] + ' '\n + monthName[month] + ' '\n + (date < 10 ? '0' + date : date) + ' '\n + year + ' '\n + (hour < 10 ? '0' + hour : hour) + ':'\n + (minute < 10 ? '0' + minute : minute) + ':'\n + (second < 10 ? '0' + second : second) + ' GMT'\n + (timezoneOffset > 0 ? '-' : '+')\n + (hoursOffset < 10 ? '0' + hoursOffset : hoursOffset)\n + (minutesOffset < 10 ? '0' + minutesOffset : minutesOffset);\n };\n if (supportsDescriptors) {\n $Object.defineProperty(Date.prototype, 'toString', {\n configurable: true,\n enumerable: false,\n writable: true\n });\n }\n }\n\n // ES5 15.9.5.43\n // http://es5.github.com/#x15.9.5.43\n // This function returns a String value represent the instance in time\n // represented by this Date object. The format of the String is the Date Time\n // string format defined in 15.9.1.15. All fields are present in the String.\n // The time zone is always UTC, denoted by the suffix Z. If the time value of\n // this object is not a finite Number a RangeError exception is thrown.\n var negativeDate = -62198755200000;\n var negativeYearString = '-000001';\n var hasNegativeDateBug = Date.prototype.toISOString && new Date(negativeDate).toISOString().indexOf(negativeYearString) === -1; // eslint-disable-line max-len\n var hasSafari51DateBug = Date.prototype.toISOString && new Date(-1).toISOString() !== '1969-12-31T23:59:59.999Z';\n\n var getTime = call.bind(Date.prototype.getTime);\n\n defineProperties(Date.prototype, {\n toISOString: function toISOString() {\n if (!isFinite(this) || !isFinite(getTime(this))) {\n // Adope Photoshop requires the second check.\n throw new RangeError('Date.prototype.toISOString called on non-finite value.');\n }\n\n var year = originalGetUTCFullYear(this);\n\n var month = originalGetUTCMonth(this);\n // see https://github.com/es-shims/es5-shim/issues/111\n year += Math.floor(month / 12);\n month = ((month % 12) + 12) % 12;\n\n // the date time string format is specified in 15.9.1.15.\n var result = [\n month + 1,\n originalGetUTCDate(this),\n originalGetUTCHours(this),\n originalGetUTCMinutes(this),\n originalGetUTCSeconds(this)\n ];\n year = (\n (year < 0 ? '-' : (year > 9999 ? '+' : ''))\n + strSlice('00000' + Math.abs(year), (0 <= year && year <= 9999) ? -4 : -6)\n );\n\n for (var i = 0; i < result.length; ++i) {\n // pad months, days, hours, minutes, and seconds to have two digits.\n result[i] = strSlice('00' + result[i], -2);\n }\n // pad milliseconds to have three digits.\n return (\n year + '-' + arraySlice(result, 0, 2).join('-')\n + 'T' + arraySlice(result, 2).join(':') + '.'\n + strSlice('000' + originalGetUTCMilliseconds(this), -3) + 'Z'\n );\n }\n }, hasNegativeDateBug || hasSafari51DateBug);\n\n // ES5 15.9.5.44\n // http://es5.github.com/#x15.9.5.44\n // This function provides a String representation of a Date object for use by\n // JSON.stringify (15.12.3).\n var dateToJSONIsSupported = (function () {\n try {\n return Date.prototype.toJSON\n && new Date(NaN).toJSON() === null\n && new Date(negativeDate).toJSON().indexOf(negativeYearString) !== -1\n && Date.prototype.toJSON.call({ // generic\n toISOString: function () { return true; }\n });\n } catch (e) {\n return false;\n }\n }());\n if (!dateToJSONIsSupported) {\n Date.prototype.toJSON = function toJSON(key) {\n // When the toJSON method is called with argument key, the following\n // steps are taken:\n\n // 1. Let O be the result of calling ToObject, giving it the this\n // value as its argument.\n // 2. Let tv be ES.ToPrimitive(O, hint Number).\n var O = $Object(this);\n var tv = ES.ToPrimitive(O);\n // 3. If tv is a Number and is not finite, return null.\n if (typeof tv === 'number' && !isFinite(tv)) {\n return null;\n }\n // 4. Let toISO be the result of calling the [[Get]] internal method of\n // O with argument \"toISOString\".\n var toISO = O.toISOString;\n // 5. If IsCallable(toISO) is false, throw a TypeError exception.\n if (!isCallable(toISO)) {\n throw new TypeError('toISOString property is not callable');\n }\n // 6. Return the result of calling the [[Call]] internal method of\n // toISO with O as the this value and an empty argument list.\n return toISO.call(O);\n\n // NOTE 1 The argument is ignored.\n\n // NOTE 2 The toJSON function is intentionally generic; it does not\n // require that its this value be a Date object. Therefore, it can be\n // transferred to other kinds of objects for use as a method. However,\n // it does require that any such object have a toISOString method. An\n // object is free to use the argument key to filter its\n // stringification.\n };\n }\n\n // ES5 15.9.4.2\n // http://es5.github.com/#x15.9.4.2\n // based on work shared by Daniel Friesen (dantman)\n // http://gist.github.com/303249\n var supportsExtendedYears = Date.parse('+033658-09-27T01:46:40.000Z') === 1e15;\n var acceptsInvalidDates = !isNaN(Date.parse('2012-04-04T24:00:00.500Z')) || !isNaN(Date.parse('2012-11-31T23:59:59.000Z')) || !isNaN(Date.parse('2012-12-31T23:59:60.000Z'));\n var doesNotParseY2KNewYear = isNaN(Date.parse('2000-01-01T00:00:00.000Z'));\n if (doesNotParseY2KNewYear || acceptsInvalidDates || !supportsExtendedYears) {\n // XXX global assignment won't work in embeddings that use\n // an alternate object for the context.\n /* global Date: true */\n var maxSafeUnsigned32Bit = Math.pow(2, 31) - 1;\n var hasSafariSignedIntBug = isActualNaN(new Date(1970, 0, 1, 0, 0, 0, maxSafeUnsigned32Bit + 1).getTime());\n // eslint-disable-next-line no-implicit-globals, no-global-assign\n Date = (function (NativeDate) {\n // Date.length === 7\n var DateShim = function Date(Y, M, D, h, m, s, ms) {\n var length = arguments.length;\n var date;\n if (this instanceof NativeDate) {\n var seconds = s;\n var millis = ms;\n if (hasSafariSignedIntBug && length >= 7 && ms > maxSafeUnsigned32Bit) {\n // work around a Safari 8/9 bug where it treats the seconds as signed\n var msToShift = Math.floor(ms / maxSafeUnsigned32Bit) * maxSafeUnsigned32Bit;\n var sToShift = Math.floor(msToShift / 1e3);\n seconds += sToShift;\n millis -= sToShift * 1e3;\n }\n date = length === 1 && $String(Y) === Y // isString(Y)\n // We explicitly pass it through parse:\n ? new NativeDate(DateShim.parse(Y))\n // We have to manually make calls depending on argument\n // length here\n : length >= 7 ? new NativeDate(Y, M, D, h, m, seconds, millis)\n : length >= 6 ? new NativeDate(Y, M, D, h, m, seconds)\n : length >= 5 ? new NativeDate(Y, M, D, h, m)\n : length >= 4 ? new NativeDate(Y, M, D, h)\n : length >= 3 ? new NativeDate(Y, M, D)\n : length >= 2 ? new NativeDate(Y, M)\n : length >= 1 ? new NativeDate(Y instanceof NativeDate ? +Y : Y)\n : new NativeDate();\n } else {\n date = NativeDate.apply(this, arguments);\n }\n if (!isPrimitive(date)) {\n // Prevent mixups with unfixed Date object\n defineProperties(date, { constructor: DateShim }, true);\n }\n return date;\n };\n\n // 15.9.1.15 Date Time String Format.\n var isoDateExpression = new RegExp('^'\n + '(\\\\d{4}|[+-]\\\\d{6})' // four-digit year capture or sign + 6-digit extended year\n + '(?:-(\\\\d{2})' // optional month capture\n + '(?:-(\\\\d{2})' // optional day capture\n + '(?:' // capture hours:minutes:seconds.milliseconds\n + 'T(\\\\d{2})' // hours capture\n + ':(\\\\d{2})' // minutes capture\n + '(?:' // optional :seconds.milliseconds\n + ':(\\\\d{2})' // seconds capture\n + '(?:(\\\\.\\\\d{1,}))?' // milliseconds capture\n + ')?'\n + '(' // capture UTC offset component\n + 'Z|' // UTC capture\n + '(?:' // offset specifier +/-hours:minutes\n + '([-+])' // sign capture\n + '(\\\\d{2})' // hours offset capture\n + ':(\\\\d{2})' // minutes offset capture\n + ')'\n + ')?)?)?)?'\n + '$');\n\n var months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365];\n\n var dayFromMonth = function dayFromMonth(year, month) {\n var t = month > 1 ? 1 : 0;\n return (\n months[month]\n + Math.floor((year - 1969 + t) / 4)\n - Math.floor((year - 1901 + t) / 100)\n + Math.floor((year - 1601 + t) / 400)\n + (365 * (year - 1970))\n );\n };\n\n var toUTC = function toUTC(t) {\n var s = 0;\n var ms = t;\n if (hasSafariSignedIntBug && ms > maxSafeUnsigned32Bit) {\n // work around a Safari 8/9 bug where it treats the seconds as signed\n var msToShift = Math.floor(ms / maxSafeUnsigned32Bit) * maxSafeUnsigned32Bit;\n var sToShift = Math.floor(msToShift / 1e3);\n s += sToShift;\n ms -= sToShift * 1e3;\n }\n return $Number(new NativeDate(1970, 0, 1, 0, 0, s, ms));\n };\n\n // Copy any custom methods a 3rd party library may have added\n for (var key in NativeDate) {\n if (owns(NativeDate, key)) {\n DateShim[key] = NativeDate[key];\n }\n }\n\n // Copy \"native\" methods explicitly; they may be non-enumerable\n defineProperties(DateShim, {\n now: NativeDate.now,\n UTC: NativeDate.UTC\n }, true);\n DateShim.prototype = NativeDate.prototype;\n defineProperties(DateShim.prototype, { constructor: DateShim }, true);\n\n // Upgrade Date.parse to handle simplified ISO 8601 strings\n var parseShim = function parse(string) {\n var match = isoDateExpression.exec(string);\n if (match) {\n // parse months, days, hours, minutes, seconds, and milliseconds\n // provide default values if necessary\n // parse the UTC offset component\n var year = $Number(match[1]),\n month = $Number(match[2] || 1) - 1,\n day = $Number(match[3] || 1) - 1,\n hour = $Number(match[4] || 0),\n minute = $Number(match[5] || 0),\n second = $Number(match[6] || 0),\n millisecond = Math.floor($Number(match[7] || 0) * 1000),\n // When time zone is missed, local offset should be used\n // (ES 5.1 bug)\n // see https://bugs.ecmascript.org/show_bug.cgi?id=112\n isLocalTime = Boolean(match[4] && !match[8]),\n signOffset = match[9] === '-' ? 1 : -1,\n hourOffset = $Number(match[10] || 0),\n minuteOffset = $Number(match[11] || 0),\n result;\n var hasMinutesOrSecondsOrMilliseconds = minute > 0 || second > 0 || millisecond > 0;\n if (\n hour < (hasMinutesOrSecondsOrMilliseconds ? 24 : 25)\n && minute < 60 && second < 60 && millisecond < 1000\n && month > -1 && month < 12 && hourOffset < 24\n && minuteOffset < 60 // detect invalid offsets\n && day > -1\n && day < (dayFromMonth(year, month + 1) - dayFromMonth(year, month))\n ) {\n result = (\n ((dayFromMonth(year, month) + day) * 24)\n + hour\n + (hourOffset * signOffset)\n ) * 60;\n result = ((\n ((result + minute + (minuteOffset * signOffset)) * 60)\n + second\n ) * 1000) + millisecond;\n if (isLocalTime) {\n result = toUTC(result);\n }\n if (-8.64e15 <= result && result <= 8.64e15) {\n return result;\n }\n }\n return NaN;\n }\n return NativeDate.parse.apply(this, arguments);\n };\n defineProperties(DateShim, { parse: parseShim });\n\n return DateShim;\n }(Date));\n /* global Date: false */\n }\n\n // ES5 15.9.4.4\n // http://es5.github.com/#x15.9.4.4\n if (!Date.now) {\n Date.now = function now() {\n return new Date().getTime();\n };\n }\n\n //\n // Number\n // ======\n //\n\n // ES5.1 15.7.4.5\n // http://es5.github.com/#x15.7.4.5\n var hasToFixedBugs = NumberPrototype.toFixed && (\n (0.00008).toFixed(3) !== '0.000'\n || (0.9).toFixed(0) !== '1'\n || (1.255).toFixed(2) !== '1.25'\n || (1000000000000000128).toFixed(0) !== '1000000000000000128'\n );\n\n var toFixedHelpers = {\n base: 1e7,\n size: 6,\n data: [0, 0, 0, 0, 0, 0],\n multiply: function multiply(n, c) {\n var i = -1;\n var c2 = c;\n while (++i < toFixedHelpers.size) {\n c2 += n * toFixedHelpers.data[i];\n toFixedHelpers.data[i] = c2 % toFixedHelpers.base;\n c2 = Math.floor(c2 / toFixedHelpers.base);\n }\n },\n divide: function divide(n) {\n var i = toFixedHelpers.size;\n var c = 0;\n while (--i >= 0) {\n c += toFixedHelpers.data[i];\n toFixedHelpers.data[i] = Math.floor(c / n);\n c = (c % n) * toFixedHelpers.base;\n }\n },\n numToString: function numToString() {\n var i = toFixedHelpers.size;\n var s = '';\n while (--i >= 0) {\n if (s !== '' || i === 0 || toFixedHelpers.data[i] !== 0) {\n var t = $String(toFixedHelpers.data[i]);\n if (s === '') {\n s = t;\n } else {\n s += strSlice('0000000', 0, 7 - t.length) + t;\n }\n }\n }\n return s;\n },\n pow: function pow(x, n, acc) {\n return (n === 0 ? acc : (n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc)));\n },\n log: function log(x) {\n var n = 0;\n var x2 = x;\n while (x2 >= 4096) {\n n += 12;\n x2 /= 4096;\n }\n while (x2 >= 2) {\n n += 1;\n x2 /= 2;\n }\n return n;\n }\n };\n\n var toFixedShim = function toFixed(fractionDigits) {\n var f, x, s, m, e, z, j, k;\n\n // Test for NaN and round fractionDigits down\n f = $Number(fractionDigits);\n f = isActualNaN(f) ? 0 : Math.floor(f);\n\n if (f < 0 || f > 20) {\n throw new RangeError('Number.toFixed called with invalid number of decimals');\n }\n\n x = $Number(this);\n\n if (isActualNaN(x)) {\n return 'NaN';\n }\n\n // If it is too big or small, return the string value of the number\n if (x <= -1e21 || x >= 1e21) {\n return $String(x);\n }\n\n s = '';\n\n if (x < 0) {\n s = '-';\n x = -x;\n }\n\n m = '0';\n\n if (x > 1e-21) {\n // 1e-21 < x < 1e21\n // -70 < log2(x) < 70\n e = toFixedHelpers.log(x * toFixedHelpers.pow(2, 69, 1)) - 69;\n z = (e < 0 ? x * toFixedHelpers.pow(2, -e, 1) : x / toFixedHelpers.pow(2, e, 1));\n z *= 0x10000000000000; // Math.pow(2, 52);\n e = 52 - e;\n\n // -18 < e < 122\n // x = z / 2 ^ e\n if (e > 0) {\n toFixedHelpers.multiply(0, z);\n j = f;\n\n while (j >= 7) {\n toFixedHelpers.multiply(1e7, 0);\n j -= 7;\n }\n\n toFixedHelpers.multiply(toFixedHelpers.pow(10, j, 1), 0);\n j = e - 1;\n\n while (j >= 23) {\n toFixedHelpers.divide(1 << 23);\n j -= 23;\n }\n\n toFixedHelpers.divide(1 << j);\n toFixedHelpers.multiply(1, 1);\n toFixedHelpers.divide(2);\n m = toFixedHelpers.numToString();\n } else {\n toFixedHelpers.multiply(0, z);\n toFixedHelpers.multiply(1 << (-e), 0);\n m = toFixedHelpers.numToString() + strSlice('0.00000000000000000000', 2, 2 + f);\n }\n }\n\n if (f > 0) {\n k = m.length;\n\n if (k <= f) {\n m = s + strSlice('0.0000000000000000000', 0, f - k + 2) + m;\n } else {\n m = s + strSlice(m, 0, k - f) + '.' + strSlice(m, k - f);\n }\n } else {\n m = s + m;\n }\n\n return m;\n };\n defineProperties(NumberPrototype, { toFixed: toFixedShim }, hasToFixedBugs);\n\n var hasToPrecisionUndefinedBug = (function () {\n try {\n return 1.0.toPrecision(undefined) === '1';\n } catch (e) {\n return true;\n }\n }());\n var originalToPrecision = NumberPrototype.toPrecision;\n defineProperties(NumberPrototype, {\n toPrecision: function toPrecision(precision) {\n return typeof precision === 'undefined' ? originalToPrecision.call(this) : originalToPrecision.call(this, precision);\n }\n }, hasToPrecisionUndefinedBug);\n\n //\n // String\n // ======\n //\n\n // ES5 15.5.4.14\n // http://es5.github.com/#x15.5.4.14\n\n // [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]\n // Many browsers do not split properly with regular expressions or they\n // do not perform the split correctly under obscure conditions.\n // See http://blog.stevenlevithan.com/archives/cross-browser-split\n // I've tested in many browsers and this seems to cover the deviant ones:\n // 'ab'.split(/(?:ab)*/) should be [\"\", \"\"], not [\"\"]\n // '.'.split(/(.?)(.?)/) should be [\"\", \".\", \"\", \"\"], not [\"\", \"\"]\n // 'tesst'.split(/(s)*/) should be [\"t\", undefined, \"e\", \"s\", \"t\"], not\n // [undefined, \"t\", undefined, \"e\", ...]\n // ''.split(/.?/) should be [], not [\"\"]\n // '.'.split(/()()/) should be [\".\"], not [\"\", \"\", \".\"]\n\n if (\n 'ab'.split(/(?:ab)*/).length !== 2\n || '.'.split(/(.?)(.?)/).length !== 4\n || 'tesst'.split(/(s)*/)[1] === 't'\n || 'test'.split(/(?:)/, -1).length !== 4\n || ''.split(/.?/).length\n || '.'.split(/()()/).length > 1\n ) {\n (function () {\n var compliantExecNpcg = typeof (/()??/).exec('')[1] === 'undefined'; // NPCG: nonparticipating capturing group\n var maxSafe32BitInt = Math.pow(2, 32) - 1;\n\n StringPrototype.split = function (separator, limit) {\n var string = String(this);\n if (typeof separator === 'undefined' && limit === 0) {\n return [];\n }\n\n // If `separator` is not a regex, use native split\n if (!isRegex(separator)) {\n return strSplit(this, separator, limit);\n }\n\n var output = [];\n var flags = (separator.ignoreCase ? 'i' : '')\n + (separator.multiline ? 'm' : '')\n + (separator.unicode ? 'u' : '') // in ES6\n + (separator.sticky ? 'y' : ''), // Firefox 3+ and ES6\n lastLastIndex = 0,\n // Make `global` and avoid `lastIndex` issues by working with a copy\n separator2, match, lastIndex, lastLength;\n var separatorCopy = new RegExp(separator.source, flags + 'g');\n if (!compliantExecNpcg) {\n // Doesn't need flags gy, but they don't hurt\n separator2 = new RegExp('^' + separatorCopy.source + '$(?!\\\\s)', flags);\n }\n /* Values for `limit`, per the spec:\n * If undefined: 4294967295 // maxSafe32BitInt\n * If 0, Infinity, or NaN: 0\n * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;\n * If negative number: 4294967296 - Math.floor(Math.abs(limit))\n * If other: Type-convert, then use the above rules\n */\n var splitLimit = typeof limit === 'undefined' ? maxSafe32BitInt : ES.ToUint32(limit);\n match = separatorCopy.exec(string);\n while (match) {\n // `separatorCopy.lastIndex` is not reliable cross-browser\n lastIndex = match.index + match[0].length;\n if (lastIndex > lastLastIndex) {\n pushCall(output, strSlice(string, lastLastIndex, match.index));\n // Fix browsers whose `exec` methods don't consistently return `undefined` for\n // nonparticipating capturing groups\n if (!compliantExecNpcg && match.length > 1) {\n /* eslint-disable no-loop-func */\n match[0].replace(separator2, function () {\n for (var i = 1; i < arguments.length - 2; i++) {\n if (typeof arguments[i] === 'undefined') {\n match[i] = void 0;\n }\n }\n });\n /* eslint-enable no-loop-func */\n }\n if (match.length > 1 && match.index < string.length) {\n array_push.apply(output, arraySlice(match, 1));\n }\n lastLength = match[0].length;\n lastLastIndex = lastIndex;\n if (output.length >= splitLimit) {\n break;\n }\n }\n if (separatorCopy.lastIndex === match.index) {\n separatorCopy.lastIndex++; // Avoid an infinite loop\n }\n match = separatorCopy.exec(string);\n }\n if (lastLastIndex === string.length) {\n if (lastLength || !separatorCopy.test('')) {\n pushCall(output, '');\n }\n } else {\n pushCall(output, strSlice(string, lastLastIndex));\n }\n return output.length > splitLimit ? arraySlice(output, 0, splitLimit) : output;\n };\n }());\n\n // [bugfix, chrome]\n // If separator is undefined, then the result array contains just one String,\n // which is the this value (converted to a String). If limit is not undefined,\n // then the output array is truncated so that it contains no more than limit\n // elements.\n // \"0\".split(undefined, 0) -> []\n } else if ('0'.split(void 0, 0).length) {\n StringPrototype.split = function split(separator, limit) {\n if (typeof separator === 'undefined' && limit === 0) {\n return [];\n }\n return strSplit(this, separator, limit);\n };\n }\n\n var str_replace = StringPrototype.replace;\n var replaceReportsGroupsCorrectly = (function () {\n var groups = [];\n 'x'.replace(/x(.)?/g, function (match, group) {\n pushCall(groups, group);\n });\n return groups.length === 1 && typeof groups[0] === 'undefined';\n }());\n\n if (!replaceReportsGroupsCorrectly) {\n StringPrototype.replace = function replace(searchValue, replaceValue) {\n var isFn = isCallable(replaceValue);\n var hasCapturingGroups = isRegex(searchValue) && (/\\)[*?]/).test(searchValue.source);\n if (!isFn || !hasCapturingGroups) {\n return str_replace.call(this, searchValue, replaceValue);\n } else {\n var wrappedReplaceValue = function (match) {\n var length = arguments.length;\n var originalLastIndex = searchValue.lastIndex;\n searchValue.lastIndex = 0;\n var args = searchValue.exec(match) || [];\n searchValue.lastIndex = originalLastIndex;\n pushCall(args, arguments[length - 2], arguments[length - 1]);\n return replaceValue.apply(this, args);\n };\n return str_replace.call(this, searchValue, wrappedReplaceValue);\n }\n };\n }\n\n // ECMA-262, 3rd B.2.3\n // Not an ECMAScript standard, although ECMAScript 3rd Edition has a\n // non-normative section suggesting uniform semantics and it should be\n // normalized across all browsers\n // [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE\n var string_substr = StringPrototype.substr;\n var hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';\n defineProperties(StringPrototype, {\n substr: function substr(start, length) {\n var normalizedStart = start;\n if (start < 0) {\n normalizedStart = max(this.length + start, 0);\n }\n return string_substr.call(this, normalizedStart, length);\n }\n }, hasNegativeSubstrBug);\n\n // ES5 15.5.4.20\n // whitespace from: http://es5.github.io/#x15.5.4.20\n var ws = '\\x09\\x0A\\x0B\\x0C\\x0D\\x20\\xA0\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003'\n + '\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000\\u2028'\n + '\\u2029\\uFEFF';\n var zeroWidth = '\\u200b';\n var wsRegexChars = '[' + ws + ']';\n var trimBeginRegexp = new RegExp('^' + wsRegexChars + wsRegexChars + '*');\n var trimEndRegexp = new RegExp(wsRegexChars + wsRegexChars + '*$');\n var hasTrimWhitespaceBug = StringPrototype.trim && (ws.trim() || !zeroWidth.trim());\n defineProperties(StringPrototype, {\n // http://blog.stevenlevithan.com/archives/faster-trim-javascript\n // http://perfectionkills.com/whitespace-deviations/\n trim: function trim() {\n if (typeof this === 'undefined' || this === null) {\n throw new TypeError(\"can't convert \" + this + ' to object');\n }\n return $String(this).replace(trimBeginRegexp, '').replace(trimEndRegexp, '');\n }\n }, hasTrimWhitespaceBug);\n var trim = call.bind(String.prototype.trim);\n\n var hasLastIndexBug = StringPrototype.lastIndexOf && 'abcあい'.lastIndexOf('あい', 2) !== -1;\n defineProperties(StringPrototype, {\n lastIndexOf: function lastIndexOf(searchString) {\n if (typeof this === 'undefined' || this === null) {\n throw new TypeError(\"can't convert \" + this + ' to object');\n }\n var S = $String(this);\n var searchStr = $String(searchString);\n var numPos = arguments.length > 1 ? $Number(arguments[1]) : NaN;\n var pos = isActualNaN(numPos) ? Infinity : ES.ToInteger(numPos);\n var start = min(max(pos, 0), S.length);\n var searchLen = searchStr.length;\n var k = start + searchLen;\n while (k > 0) {\n k = max(0, k - searchLen);\n var index = strIndexOf(strSlice(S, k, start + searchLen), searchStr);\n if (index !== -1) {\n return k + index;\n }\n }\n return -1;\n }\n }, hasLastIndexBug);\n\n var originalLastIndexOf = StringPrototype.lastIndexOf;\n defineProperties(StringPrototype, {\n lastIndexOf: function lastIndexOf(searchString) {\n return originalLastIndexOf.apply(this, arguments);\n }\n }, StringPrototype.lastIndexOf.length !== 1);\n\n // ES-5 15.1.2.2\n // eslint-disable-next-line radix\n if (parseInt(ws + '08') !== 8 || parseInt(ws + '0x16') !== 22) {\n /* global parseInt: true */\n parseInt = (function (origParseInt) {\n var hexRegex = /^[-+]?0[xX]/;\n return function parseInt(str, radix) {\n if (typeof str === 'symbol') {\n // handle Symbols in node 8.3/8.4\n // eslint-disable-next-line no-implicit-coercion, no-unused-expressions\n '' + str; // jscs:ignore disallowImplicitTypeConversion\n }\n\n var string = trim(String(str));\n var defaultedRadix = $Number(radix) || (hexRegex.test(string) ? 16 : 10);\n return origParseInt(string, defaultedRadix);\n };\n }(parseInt));\n }\n\n // https://es5.github.io/#x15.1.2.3\n if (1 / parseFloat('-0') !== -Infinity) {\n /* global parseFloat: true */\n parseFloat = (function (origParseFloat) {\n return function parseFloat(string) {\n var inputString = trim(String(string));\n var result = origParseFloat(inputString);\n return result === 0 && strSlice(inputString, 0, 1) === '-' ? -0 : result;\n };\n }(parseFloat));\n }\n\n if (String(new RangeError('test')) !== 'RangeError: test') {\n var errorToStringShim = function toString() {\n if (typeof this === 'undefined' || this === null) {\n throw new TypeError(\"can't convert \" + this + ' to object');\n }\n var name = this.name;\n if (typeof name === 'undefined') {\n name = 'Error';\n } else if (typeof name !== 'string') {\n name = $String(name);\n }\n var msg = this.message;\n if (typeof msg === 'undefined') {\n msg = '';\n } else if (typeof msg !== 'string') {\n msg = $String(msg);\n }\n if (!name) {\n return msg;\n }\n if (!msg) {\n return name;\n }\n return name + ': ' + msg;\n };\n // can't use defineProperties here because of toString enumeration issue in IE <= 8\n Error.prototype.toString = errorToStringShim;\n }\n\n if (supportsDescriptors) {\n var ensureNonEnumerable = function (obj, prop) {\n if (isEnum(obj, prop)) {\n var desc = Object.getOwnPropertyDescriptor(obj, prop);\n if (desc.configurable) {\n desc.enumerable = false;\n Object.defineProperty(obj, prop, desc);\n }\n }\n };\n ensureNonEnumerable(Error.prototype, 'message');\n if (Error.prototype.message !== '') {\n Error.prototype.message = '';\n }\n ensureNonEnumerable(Error.prototype, 'name');\n }\n\n if (String(/a/mig) !== '/a/gim') {\n var regexToString = function toString() {\n var str = '/' + this.source + '/';\n if (this.global) {\n str += 'g';\n }\n if (this.ignoreCase) {\n str += 'i';\n }\n if (this.multiline) {\n str += 'm';\n }\n return str;\n };\n // can't use defineProperties here because of toString enumeration issue in IE <= 8\n RegExp.prototype.toString = regexToString;\n }\n}));\n","/*!\n * https://github.com/es-shims/es5-shim\n * @license es5-shim Copyright 2009-2015 by contributors, MIT License\n * see https://github.com/es-shims/es5-shim/blob/master/LICENSE\n */\n\n// vim: ts=4 sts=4 sw=4 expandtab\n\n// Add semicolon to prevent IIFE from being passed as argument to concatenated code.\n;\n\n// UMD (Universal Module Definition)\n// see https://github.com/umdjs/umd/blob/master/templates/returnExports.js\n(function (root, factory) {\n 'use strict';\n\n /* global define, exports, module */\n if (typeof define === 'function' && define.amd) {\n // AMD. Register as an anonymous module.\n define(factory);\n } else if (typeof exports === 'object') {\n // Node. Does not work with strict CommonJS, but\n // only CommonJS-like enviroments that support module.exports,\n // like Node.\n module.exports = factory();\n } else {\n // Browser globals (root is window)\n root.returnExports = factory();\n }\n}(this, function () {\n\n var call = Function.call;\n var prototypeOfObject = Object.prototype;\n var owns = call.bind(prototypeOfObject.hasOwnProperty);\n var isEnumerable = call.bind(prototypeOfObject.propertyIsEnumerable);\n var toStr = call.bind(prototypeOfObject.toString);\n\n // If JS engine supports accessors creating shortcuts.\n var defineGetter;\n var defineSetter;\n var lookupGetter;\n var lookupSetter;\n var supportsAccessors = owns(prototypeOfObject, '__defineGetter__');\n if (supportsAccessors) {\n /* eslint-disable no-underscore-dangle, no-restricted-properties */\n defineGetter = call.bind(prototypeOfObject.__defineGetter__);\n defineSetter = call.bind(prototypeOfObject.__defineSetter__);\n lookupGetter = call.bind(prototypeOfObject.__lookupGetter__);\n lookupSetter = call.bind(prototypeOfObject.__lookupSetter__);\n /* eslint-enable no-underscore-dangle, no-restricted-properties */\n }\n\n var isPrimitive = function isPrimitive(o) {\n return o == null || (typeof o !== 'object' && typeof o !== 'function');\n };\n\n // ES5 15.2.3.2\n // http://es5.github.com/#x15.2.3.2\n if (!Object.getPrototypeOf) {\n // https://github.com/es-shims/es5-shim/issues#issue/2\n // http://ejohn.org/blog/objectgetprototypeof/\n // recommended by fschaefer on github\n //\n // sure, and webreflection says ^_^\n // ... this will nerever possibly return null\n // ... Opera Mini breaks here with infinite loops\n Object.getPrototypeOf = function getPrototypeOf(object) {\n // eslint-disable-next-line no-proto\n var proto = object.__proto__;\n if (proto || proto === null) {\n return proto;\n } else if (toStr(object.constructor) === '[object Function]') {\n return object.constructor.prototype;\n } else if (object instanceof Object) {\n return prototypeOfObject;\n } else {\n // Correctly return null for Objects created with `Object.create(null)`\n // (shammed or native) or `{ __proto__: null}`. Also returns null for\n // cross-realm objects on browsers that lack `__proto__` support (like\n // IE <11), but that's the best we can do.\n return null;\n }\n };\n }\n\n // ES5 15.2.3.3\n // http://es5.github.com/#x15.2.3.3\n\n var doesGetOwnPropertyDescriptorWork = function doesGetOwnPropertyDescriptorWork(object) {\n try {\n object.sentinel = 0;\n return Object.getOwnPropertyDescriptor(object, 'sentinel').value === 0;\n } catch (exception) {\n return false;\n }\n };\n\n // check whether getOwnPropertyDescriptor works if it's given. Otherwise, shim partially.\n if (Object.defineProperty) {\n var getOwnPropertyDescriptorWorksOnObject = doesGetOwnPropertyDescriptorWork({});\n var getOwnPropertyDescriptorWorksOnDom = typeof document === 'undefined'\n || doesGetOwnPropertyDescriptorWork(document.createElement('div'));\n if (!getOwnPropertyDescriptorWorksOnDom || !getOwnPropertyDescriptorWorksOnObject) {\n var getOwnPropertyDescriptorFallback = Object.getOwnPropertyDescriptor;\n }\n }\n\n if (!Object.getOwnPropertyDescriptor || getOwnPropertyDescriptorFallback) {\n var ERR_NON_OBJECT = 'Object.getOwnPropertyDescriptor called on a non-object: ';\n\n /* eslint-disable no-proto */\n Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(object, property) {\n if (isPrimitive(object)) {\n throw new TypeError(ERR_NON_OBJECT + object);\n }\n\n // make a valiant attempt to use the real getOwnPropertyDescriptor\n // for I8's DOM elements.\n if (getOwnPropertyDescriptorFallback) {\n try {\n return getOwnPropertyDescriptorFallback.call(Object, object, property);\n } catch (exception) {\n // try the shim if the real one doesn't work\n }\n }\n\n var descriptor;\n\n // If object does not owns property return undefined immediately.\n if (!owns(object, property)) {\n return descriptor;\n }\n\n // If object has a property then it's for sure `configurable`, and\n // probably `enumerable`. Detect enumerability though.\n descriptor = {\n enumerable: isEnumerable(object, property),\n configurable: true\n };\n\n // If JS engine supports accessor properties then property may be a\n // getter or setter.\n if (supportsAccessors) {\n // Unfortunately `__lookupGetter__` will return a getter even\n // if object has own non getter property along with a same named\n // inherited getter. To avoid misbehavior we temporary remove\n // `__proto__` so that `__lookupGetter__` will return getter only\n // if it's owned by an object.\n var prototype = object.__proto__;\n var notPrototypeOfObject = object !== prototypeOfObject;\n // avoid recursion problem, breaking in Opera Mini when\n // Object.getOwnPropertyDescriptor(Object.prototype, 'toString')\n // or any other Object.prototype accessor\n if (notPrototypeOfObject) {\n object.__proto__ = prototypeOfObject;\n }\n\n var getter = lookupGetter(object, property);\n var setter = lookupSetter(object, property);\n\n if (notPrototypeOfObject) {\n // Once we have getter and setter we can put values back.\n object.__proto__ = prototype;\n }\n\n if (getter || setter) {\n if (getter) {\n descriptor.get = getter;\n }\n if (setter) {\n descriptor.set = setter;\n }\n // If it was accessor property we're done and return here\n // in order to avoid adding `value` to the descriptor.\n return descriptor;\n }\n }\n\n // If we got this far we know that object has an own property that is\n // not an accessor so we set it as a value and return descriptor.\n descriptor.value = object[property];\n descriptor.writable = true;\n return descriptor;\n };\n /* eslint-enable no-proto */\n }\n\n // ES5 15.2.3.4\n // http://es5.github.com/#x15.2.3.4\n if (!Object.getOwnPropertyNames) {\n Object.getOwnPropertyNames = function getOwnPropertyNames(object) {\n return Object.keys(object);\n };\n }\n\n // ES5 15.2.3.5\n // http://es5.github.com/#x15.2.3.5\n if (!Object.create) {\n\n // Contributed by Brandon Benvie, October, 2012\n var createEmpty;\n var supportsProto = !({ __proto__: null } instanceof Object);\n // the following produces false positives\n // in Opera Mini => not a reliable check\n // Object.prototype.__proto__ === null\n\n // Check for document.domain and active x support\n // No need to use active x approach when document.domain is not set\n // see https://github.com/es-shims/es5-shim/issues/150\n // variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346\n /* global ActiveXObject */\n var shouldUseActiveX = function shouldUseActiveX() {\n // return early if document.domain not set\n if (!document.domain) {\n return false;\n }\n\n try {\n return !!new ActiveXObject('htmlfile');\n } catch (exception) {\n return false;\n }\n };\n\n // This supports IE8 when document.domain is used\n // see https://github.com/es-shims/es5-shim/issues/150\n // variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346\n var getEmptyViaActiveX = function getEmptyViaActiveX() {\n var empty;\n var xDoc;\n\n xDoc = new ActiveXObject('htmlfile');\n\n var script = 'script';\n xDoc.write('<' + script + '></' + script + '>');\n xDoc.close();\n\n empty = xDoc.parentWindow.Object.prototype;\n xDoc = null;\n\n return empty;\n };\n\n // The original implementation using an iframe\n // before the activex approach was added\n // see https://github.com/es-shims/es5-shim/issues/150\n var getEmptyViaIFrame = function getEmptyViaIFrame() {\n var iframe = document.createElement('iframe');\n var parent = document.body || document.documentElement;\n var empty;\n\n iframe.style.display = 'none';\n parent.appendChild(iframe);\n // eslint-disable-next-line no-script-url\n iframe.src = 'javascript:';\n\n empty = iframe.contentWindow.Object.prototype;\n parent.removeChild(iframe);\n iframe = null;\n\n return empty;\n };\n\n /* global document */\n if (supportsProto || typeof document === 'undefined') {\n createEmpty = function () {\n return { __proto__: null };\n };\n } else {\n // In old IE __proto__ can't be used to manually set `null`, nor does\n // any other method exist to make an object that inherits from nothing,\n // aside from Object.prototype itself. Instead, create a new global\n // object and *steal* its Object.prototype and strip it bare. This is\n // used as the prototype to create nullary objects.\n createEmpty = function () {\n // Determine which approach to use\n // see https://github.com/es-shims/es5-shim/issues/150\n var empty = shouldUseActiveX() ? getEmptyViaActiveX() : getEmptyViaIFrame();\n\n delete empty.constructor;\n delete empty.hasOwnProperty;\n delete empty.propertyIsEnumerable;\n delete empty.isPrototypeOf;\n delete empty.toLocaleString;\n delete empty.toString;\n delete empty.valueOf;\n\n var Empty = function Empty() {};\n Empty.prototype = empty;\n // short-circuit future calls\n createEmpty = function () {\n return new Empty();\n };\n return new Empty();\n };\n }\n\n Object.create = function create(prototype, properties) {\n\n var object;\n var Type = function Type() {}; // An empty constructor.\n\n if (prototype === null) {\n object = createEmpty();\n } else {\n if (prototype !== null && isPrimitive(prototype)) {\n // In the native implementation `parent` can be `null`\n // OR *any* `instanceof Object` (Object|Function|Array|RegExp|etc)\n // Use `typeof` tho, b/c in old IE, DOM elements are not `instanceof Object`\n // like they are in modern browsers. Using `Object.create` on DOM elements\n // is...err...probably inappropriate, but the native version allows for it.\n throw new TypeError('Object prototype may only be an Object or null'); // same msg as Chrome\n }\n Type.prototype = prototype;\n object = new Type();\n // IE has no built-in implementation of `Object.getPrototypeOf`\n // neither `__proto__`, but this manually setting `__proto__` will\n // guarantee that `Object.getPrototypeOf` will work as expected with\n // objects created using `Object.create`\n // eslint-disable-next-line no-proto\n object.__proto__ = prototype;\n }\n\n if (properties !== void 0) {\n Object.defineProperties(object, properties);\n }\n\n return object;\n };\n }\n\n // ES5 15.2.3.6\n // http://es5.github.com/#x15.2.3.6\n\n // Patch for WebKit and IE8 standard mode\n // Designed by hax <hax.github.com>\n // related issue: https://github.com/es-shims/es5-shim/issues#issue/5\n // IE8 Reference:\n // http://msdn.microsoft.com/en-us/library/dd282900.aspx\n // http://msdn.microsoft.com/en-us/library/dd229916.aspx\n // WebKit Bugs:\n // https://bugs.webkit.org/show_bug.cgi?id=36423\n\n var doesDefinePropertyWork = function doesDefinePropertyWork(object) {\n try {\n Object.defineProperty(object, 'sentinel', {});\n return 'sentinel' in object;\n } catch (exception) {\n return false;\n }\n };\n\n // check whether defineProperty works if it's given. Otherwise,\n // shim partially.\n if (Object.defineProperty) {\n var definePropertyWorksOnObject = doesDefinePropertyWork({});\n var definePropertyWorksOnDom = typeof document === 'undefined'\n || doesDefinePropertyWork(document.createElement('div'));\n if (!definePropertyWorksOnObject || !definePropertyWorksOnDom) {\n var definePropertyFallback = Object.defineProperty,\n definePropertiesFallback = Object.defineProperties;\n }\n }\n\n if (!Object.defineProperty || definePropertyFallback) {\n var ERR_NON_OBJECT_DESCRIPTOR = 'Property description must be an object: ';\n var ERR_NON_OBJECT_TARGET = 'Object.defineProperty called on non-object: ';\n var ERR_ACCESSORS_NOT_SUPPORTED = 'getters & setters can not be defined on this javascript engine';\n\n Object.defineProperty = function defineProperty(object, property, descriptor) {\n if (isPrimitive(object)) {\n throw new TypeError(ERR_NON_OBJECT_TARGET + object);\n }\n if (isPrimitive(descriptor)) {\n throw new TypeError(ERR_NON_OBJECT_DESCRIPTOR + descriptor);\n }\n // make a valiant attempt to use the real defineProperty\n // for I8's DOM elements.\n if (definePropertyFallback) {\n try {\n return definePropertyFallback.call(Object, object, property, descriptor);\n } catch (exception) {\n // try the shim if the real one doesn't work\n }\n }\n\n // If it's a data property.\n if ('value' in descriptor) {\n // fail silently if 'writable', 'enumerable', or 'configurable'\n // are requested but not supported\n /*\n // alternate approach:\n if ( // can't implement these features; allow false but not true\n ('writable' in descriptor && !descriptor.writable) ||\n ('enumerable' in descriptor && !descriptor.enumerable) ||\n ('configurable' in descriptor && !descriptor.configurable)\n ))\n throw new RangeError(\n 'This implementation of Object.defineProperty does not support configurable, enumerable, or writable.'\n );\n */\n\n if (supportsAccessors && (lookupGetter(object, property) || lookupSetter(object, property))) {\n // As accessors are supported only on engines implementing\n // `__proto__` we can safely override `__proto__` while defining\n // a property to make sure that we don't hit an inherited\n // accessor.\n /* eslint-disable no-proto */\n var prototype = object.__proto__;\n object.__proto__ = prototypeOfObject;\n // Deleting a property anyway since getter / setter may be\n // defined on object itself.\n delete object[property];\n object[property] = descriptor.value;\n // Setting original `__proto__` back now.\n object.__proto__ = prototype;\n /* eslint-enable no-proto */\n } else {\n object[property] = descriptor.value;\n }\n } else {\n var hasGetter = 'get' in descriptor;\n var hasSetter = 'set' in descriptor;\n if (!supportsAccessors && (hasGetter || hasSetter)) {\n throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);\n }\n // If we got that far then getters and setters can be defined !!\n if (hasGetter) {\n defineGetter(object, property, descriptor.get);\n }\n if (hasSetter) {\n defineSetter(object, property, descriptor.set);\n }\n }\n return object;\n };\n }\n\n // ES5 15.2.3.7\n // http://es5.github.com/#x15.2.3.7\n if (!Object.defineProperties || definePropertiesFallback) {\n Object.defineProperties = function defineProperties(object, properties) {\n // make a valiant attempt to use the real defineProperties\n if (definePropertiesFallback) {\n try {\n return definePropertiesFallback.call(Object, object, properties);\n } catch (exception) {\n // try the shim if the real one doesn't work\n }\n }\n\n Object.keys(properties).forEach(function (property) {\n if (property !== '__proto__') {\n Object.defineProperty(object, property, properties[property]);\n }\n });\n return object;\n };\n }\n\n // ES5 15.2.3.8\n // http://es5.github.com/#x15.2.3.8\n if (!Object.seal) {\n Object.seal = function seal(object) {\n if (Object(object) !== object) {\n throw new TypeError('Object.seal can only be called on Objects.');\n }\n // this is misleading and breaks feature-detection, but\n // allows \"securable\" code to \"gracefully\" degrade to working\n // but insecure code.\n return object;\n };\n }\n\n // ES5 15.2.3.9\n // http://es5.github.com/#x15.2.3.9\n if (!Object.freeze) {\n Object.freeze = function freeze(object) {\n if (Object(object) !== object) {\n throw new TypeError('Object.freeze can only be called on Objects.');\n }\n // this is misleading and breaks feature-detection, but\n // allows \"securable\" code to \"gracefully\" degrade to working\n // but insecure code.\n return object;\n };\n }\n\n // detect a Rhino bug and patch it\n try {\n Object.freeze(function () {});\n } catch (exception) {\n Object.freeze = (function (freezeObject) {\n return function freeze(object) {\n if (typeof object === 'function') {\n return object;\n } else {\n return freezeObject(object);\n }\n };\n }(Object.freeze));\n }\n\n // ES5 15.2.3.10\n // http://es5.github.com/#x15.2.3.10\n if (!Object.preventExtensions) {\n Object.preventExtensions = function preventExtensions(object) {\n if (Object(object) !== object) {\n throw new TypeError('Object.preventExtensions can only be called on Objects.');\n }\n // this is misleading and breaks feature-detection, but\n // allows \"securable\" code to \"gracefully\" degrade to working\n // but insecure code.\n return object;\n };\n }\n\n // ES5 15.2.3.11\n // http://es5.github.com/#x15.2.3.11\n if (!Object.isSealed) {\n Object.isSealed = function isSealed(object) {\n if (Object(object) !== object) {\n throw new TypeError('Object.isSealed can only be called on Objects.');\n }\n return false;\n };\n }\n\n // ES5 15.2.3.12\n // http://es5.github.com/#x15.2.3.12\n if (!Object.isFrozen) {\n Object.isFrozen = function isFrozen(object) {\n if (Object(object) !== object) {\n throw new TypeError('Object.isFrozen can only be called on Objects.');\n }\n return false;\n };\n }\n\n // ES5 15.2.3.13\n // http://es5.github.com/#x15.2.3.13\n if (!Object.isExtensible) {\n Object.isExtensible = function isExtensible(object) {\n // 1. If Type(O) is not Object throw a TypeError exception.\n if (Object(object) !== object) {\n throw new TypeError('Object.isExtensible can only be called on Objects.');\n }\n // 2. Return the Boolean value of the [[Extensible]] internal property of O.\n var name = '';\n while (owns(object, name)) {\n name += '?';\n }\n object[name] = true;\n var returnValue = owns(object, name);\n delete object[name];\n return returnValue;\n };\n }\n\n}));\n","/*!\n * https://github.com/paulmillr/es6-shim\n * @license es6-shim Copyright 2013-2016 by Paul Miller (http://paulmillr.com)\n * and contributors, MIT License\n * es6-shim: v0.35.4\n * see https://github.com/paulmillr/es6-shim/blob/0.35.3/LICENSE\n * Details and documentation:\n * https://github.com/paulmillr/es6-shim/\n */\n\n// UMD (Universal Module Definition)\n// see https://github.com/umdjs/umd/blob/master/returnExports.js\n(function (root, factory) {\n /*global define, module, exports */\n if (typeof define === 'function' && define.amd) {\n // AMD. Register as an anonymous module.\n define(factory);\n } else if (typeof exports === 'object') {\n // Node. Does not work with strict CommonJS, but\n // only CommonJS-like environments that support module.exports,\n // like Node.\n module.exports = factory();\n } else {\n // Browser globals (root is window)\n root.returnExports = factory();\n }\n}(this, function () {\n 'use strict';\n\n var _apply = Function.call.bind(Function.apply);\n var _call = Function.call.bind(Function.call);\n var isArray = Array.isArray;\n var keys = Object.keys;\n\n var not = function notThunker(func) {\n return function notThunk() {\n return !_apply(func, this, arguments);\n };\n };\n var throwsError = function (func) {\n try {\n func();\n return false;\n } catch (e) {\n return true;\n }\n };\n var valueOrFalseIfThrows = function valueOrFalseIfThrows(func) {\n try {\n return func();\n } catch (e) {\n return false;\n }\n };\n\n var isCallableWithoutNew = not(throwsError);\n var arePropertyDescriptorsSupported = function () {\n // if Object.defineProperty exists but throws, it's IE 8\n return !throwsError(function () {\n return Object.defineProperty({}, 'x', { get: function () { } }); // eslint-disable-line getter-return\n });\n };\n var supportsDescriptors = !!Object.defineProperty && arePropertyDescriptorsSupported();\n var functionsHaveNames = (function foo() {}).name === 'foo'; // eslint-disable-line no-extra-parens\n\n var _forEach = Function.call.bind(Array.prototype.forEach);\n var _reduce = Function.call.bind(Array.prototype.reduce);\n var _filter = Function.call.bind(Array.prototype.filter);\n var _some = Function.call.bind(Array.prototype.some);\n\n var defineProperty = function (object, name, value, force) {\n if (!force && name in object) { return; }\n if (supportsDescriptors) {\n Object.defineProperty(object, name, {\n configurable: true,\n enumerable: false,\n writable: true,\n value: value\n });\n } else {\n object[name] = value;\n }\n };\n\n // Define configurable, writable and non-enumerable props\n // if they don’t exist.\n var defineProperties = function (object, map, forceOverride) {\n _forEach(keys(map), function (name) {\n var method = map[name];\n defineProperty(object, name, method, !!forceOverride);\n });\n };\n\n var _toString = Function.call.bind(Object.prototype.toString);\n var isCallable = typeof /abc/ === 'function' ? function IsCallableSlow(x) {\n // Some old browsers (IE, FF) say that typeof /abc/ === 'function'\n return typeof x === 'function' && _toString(x) === '[object Function]';\n } : function IsCallableFast(x) { return typeof x === 'function'; };\n\n var Value = {\n getter: function (object, name, getter) {\n if (!supportsDescriptors) {\n throw new TypeError('getters require true ES5 support');\n }\n Object.defineProperty(object, name, {\n configurable: true,\n enumerable: false,\n get: getter\n });\n },\n proxy: function (originalObject, key, targetObject) {\n if (!supportsDescriptors) {\n throw new TypeError('getters require true ES5 support');\n }\n var originalDescriptor = Object.getOwnPropertyDescriptor(originalObject, key);\n Object.defineProperty(targetObject, key, {\n configurable: originalDescriptor.configurable,\n enumerable: originalDescriptor.enumerable,\n get: function getKey() { return originalObject[key]; },\n set: function setKey(value) { originalObject[key] = value; }\n });\n },\n redefine: function (object, property, newValue) {\n if (supportsDescriptors) {\n var descriptor = Object.getOwnPropertyDescriptor(object, property);\n descriptor.value = newValue;\n Object.defineProperty(object, property, descriptor);\n } else {\n object[property] = newValue;\n }\n },\n defineByDescriptor: function (object, property, descriptor) {\n if (supportsDescriptors) {\n Object.defineProperty(object, property, descriptor);\n } else if ('value' in descriptor) {\n object[property] = descriptor.value;\n }\n },\n preserveToString: function (target, source) {\n if (source && isCallable(source.toString)) {\n defineProperty(target, 'toString', source.toString.bind(source), true);\n }\n }\n };\n\n // Simple shim for Object.create on ES3 browsers\n // (unlike real shim, no attempt to support `prototype === null`)\n var create = Object.create || function (prototype, properties) {\n var Prototype = function Prototype() {};\n Prototype.prototype = prototype;\n var object = new Prototype();\n if (typeof properties !== 'undefined') {\n keys(properties).forEach(function (key) {\n Value.defineByDescriptor(object, key, properties[key]);\n });\n }\n return object;\n };\n\n var supportsSubclassing = function (C, f) {\n if (!Object.setPrototypeOf) { return false; /* skip test on IE < 11 */ }\n return valueOrFalseIfThrows(function () {\n var Sub = function Subclass(arg) {\n var o = new C(arg);\n Object.setPrototypeOf(o, Subclass.prototype);\n return o;\n };\n Object.setPrototypeOf(Sub, C);\n Sub.prototype = create(C.prototype, {\n constructor: { value: Sub }\n });\n return f(Sub);\n });\n };\n\n var getGlobal = function () {\n /* global self, window, global */\n // the only reliable means to get the global object is\n // `Function('return this')()`\n // However, this causes CSP violations in Chrome apps.\n if (typeof self !== 'undefined') { return self; }\n if (typeof window !== 'undefined') { return window; }\n if (typeof global !== 'undefined') { return global; }\n throw new Error('unable to locate global object');\n };\n\n var globals = getGlobal();\n var globalIsFinite = globals.isFinite;\n var _indexOf = Function.call.bind(String.prototype.indexOf);\n var _arrayIndexOfApply = Function.apply.bind(Array.prototype.indexOf);\n var _concat = Function.call.bind(Array.prototype.concat);\n // var _sort = Function.call.bind(Array.prototype.sort);\n var _strSlice = Function.call.bind(String.prototype.slice);\n var _push = Function.call.bind(Array.prototype.push);\n var _pushApply = Function.apply.bind(Array.prototype.push);\n var _shift = Function.call.bind(Array.prototype.shift);\n var _max = Math.max;\n var _min = Math.min;\n var _floor = Math.floor;\n var _abs = Math.abs;\n var _exp = Math.exp;\n var _log = Math.log;\n var _sqrt = Math.sqrt;\n var _hasOwnProperty = Function.call.bind(Object.prototype.hasOwnProperty);\n var ArrayIterator; // make our implementation private\n var noop = function () {};\n\n var OrigMap = globals.Map;\n var origMapDelete = OrigMap && OrigMap.prototype['delete'];\n var origMapGet = OrigMap && OrigMap.prototype.get;\n var origMapHas = OrigMap && OrigMap.prototype.has;\n var origMapSet = OrigMap && OrigMap.prototype.set;\n\n var Symbol = globals.Symbol || {};\n var symbolSpecies = Symbol.species || '@@species';\n\n var numberIsNaN = Number.isNaN || function isNaN(value) {\n // NaN !== NaN, but they are identical.\n // NaNs are the only non-reflexive value, i.e., if x !== x,\n // then x is NaN.\n // isNaN is broken: it converts its argument to number, so\n // isNaN('foo') => true\n return value !== value;\n };\n var numberIsFinite = Number.isFinite || function isFinite(value) {\n return typeof value === 'number' && globalIsFinite(value);\n };\n var _sign = isCallable(Math.sign) ? Math.sign : function sign(value) {\n var number = Number(value);\n if (number === 0) { return number; }\n if (numberIsNaN(number)) { return number; }\n return number < 0 ? -1 : 1;\n };\n var _log1p = function log1p(value) {\n var x = Number(value);\n if (x < -1 || numberIsNaN(x)) { return NaN; }\n if (x === 0 || x === Infinity) { return x; }\n if (x === -1) { return -Infinity; }\n\n return (1 + x) - 1 === 0 ? x : x * (_log(1 + x) / ((1 + x) - 1));\n };\n\n // taken directly from https://github.com/ljharb/is-arguments/blob/master/index.js\n // can be replaced with require('is-arguments') if we ever use a build process instead\n var isStandardArguments = function isArguments(value) {\n return _toString(value) === '[object Arguments]';\n };\n var isLegacyArguments = function isArguments(value) {\n return value !== null &&\n typeof value === 'object' &&\n typeof value.length === 'number' &&\n value.length >= 0 &&\n _toString(value) !== '[object Array]' &&\n _toString(value.callee) === '[object Function]';\n };\n var isArguments = isStandardArguments(arguments) ? isStandardArguments : isLegacyArguments;\n\n var Type = {\n primitive: function (x) { return x === null || (typeof x !== 'function' && typeof x !== 'object'); },\n string: function (x) { return _toString(x) === '[object String]'; },\n regex: function (x) { return _toString(x) === '[object RegExp]'; },\n symbol: function (x) {\n return typeof globals.Symbol === 'function' && typeof x === 'symbol';\n }\n };\n\n var overrideNative = function overrideNative(object, property, replacement) {\n var original = object[property];\n defineProperty(object, property, replacement, true);\n Value.preserveToString(object[property], original);\n };\n\n // eslint-disable-next-line no-restricted-properties\n var hasSymbols = typeof Symbol === 'function' && typeof Symbol['for'] === 'function' && Type.symbol(Symbol());\n\n // This is a private name in the es6 spec, equal to '[Symbol.iterator]'\n // we're going to use an arbitrary _-prefixed name to make our shims\n // work properly with each other, even though we don't have full Iterator\n // support. That is, `Array.from(map.keys())` will work, but we don't\n // pretend to export a \"real\" Iterator interface.\n var $iterator$ = Type.symbol(Symbol.iterator) ? Symbol.iterator : '_es6-shim iterator_';\n // Firefox ships a partial implementation using the name @@iterator.\n // https://bugzilla.mozilla.org/show_bug.cgi?id=907077#c14\n // So use that name if we detect it.\n if (globals.Set && typeof new globals.Set()['@@iterator'] === 'function') {\n $iterator$ = '@@iterator';\n }\n\n // Reflect\n if (!globals.Reflect) {\n defineProperty(globals, 'Reflect', {}, true);\n }\n var Reflect = globals.Reflect;\n\n var $String = String;\n\n /* global document */\n var domAll = (typeof document === 'undefined' || !document) ? null : document.all;\n /* jshint eqnull:true */\n var isNullOrUndefined = domAll == null ? function isNullOrUndefined(x) {\n /* jshint eqnull:true */\n return x == null;\n } : function isNullOrUndefinedAndNotDocumentAll(x) {\n /* jshint eqnull:true */\n return x == null && x !== domAll;\n };\n\n var ES = {\n // http://www.ecma-international.org/ecma-262/6.0/#sec-call\n Call: function Call(F, V) {\n var args = arguments.length > 2 ? arguments[2] : [];\n if (!ES.IsCallable(F)) {\n throw new TypeError(F + ' is not a function');\n }\n return _apply(F, V, args);\n },\n\n RequireObjectCoercible: function (x, optMessage) {\n if (isNullOrUndefined(x)) {\n throw new TypeError(optMessage || 'Cannot call method on ' + x);\n }\n return x;\n },\n\n // This might miss the \"(non-standard exotic and does not implement\n // [[Call]])\" case from\n // http://www.ecma-international.org/ecma-262/6.0/#sec-typeof-operator-runtime-semantics-evaluation\n // but we can't find any evidence these objects exist in practice.\n // If we find some in the future, you could test `Object(x) === x`,\n // which is reliable according to\n // http://www.ecma-international.org/ecma-262/6.0/#sec-toobject\n // but is not well optimized by runtimes and creates an object\n // whenever it returns false, and thus is very slow.\n TypeIsObject: function (x) {\n if (x === void 0 || x === null || x === true || x === false) {\n return false;\n }\n return typeof x === 'function' || typeof x === 'object' || x === domAll;\n },\n\n ToObject: function (o, optMessage) {\n return Object(ES.RequireObjectCoercible(o, optMessage));\n },\n\n IsCallable: isCallable,\n\n IsConstructor: function (x) {\n // We can't tell callables from constructors in ES5\n return ES.IsCallable(x);\n },\n\n ToInt32: function (x) {\n return ES.ToNumber(x) >> 0;\n },\n\n ToUint32: function (x) {\n return ES.ToNumber(x) >>> 0;\n },\n\n ToNumber: function (value) {\n if (_toString(value) === '[object Symbol]') {\n throw new TypeError('Cannot convert a Symbol value to a number');\n }\n return +value;\n },\n\n ToInteger: function (value) {\n var number = ES.ToNumber(value);\n if (numberIsNaN(number)) { return 0; }\n if (number === 0 || !numberIsFinite(number)) { return number; }\n return (number > 0 ? 1 : -1) * _floor(_abs(number));\n },\n\n ToLength: function (value) {\n var len = ES.ToInteger(value);\n if (len <= 0) { return 0; } // includes converting -0 to +0\n if (len > Number.MAX_SAFE_INTEGER) { return Number.MAX_SAFE_INTEGER; }\n return len;\n },\n\n SameValue: function (a, b) {\n if (a === b) {\n // 0 === -0, but they are not identical.\n if (a === 0) { return 1 / a === 1 / b; }\n return true;\n }\n return numberIsNaN(a) && numberIsNaN(b);\n },\n\n SameValueZero: function (a, b) {\n // same as SameValue except for SameValueZero(+0, -0) == true\n return (a === b) || (numberIsNaN(a) && numberIsNaN(b));\n },\n\n IsIterable: function (o) {\n return ES.TypeIsObject(o) && (typeof o[$iterator$] !== 'undefined' || isArguments(o));\n },\n\n GetIterator: function (o) {\n if (isArguments(o)) {\n // special case support for `arguments`\n return new ArrayIterator(o, 'value');\n }\n var itFn = ES.GetMethod(o, $iterator$);\n if (!ES.IsCallable(itFn)) {\n // Better diagnostics if itFn is null or undefined\n throw new TypeError('value is not an iterable');\n }\n var it = ES.Call(itFn, o);\n if (!ES.TypeIsObject(it)) {\n throw new TypeError('bad iterator');\n }\n return it;\n },\n\n GetMethod: function (o, p) {\n var func = ES.ToObject(o)[p];\n if (isNullOrUndefined(func)) {\n return void 0;\n }\n if (!ES.IsCallable(func)) {\n throw new TypeError('Method not callable: ' + p);\n }\n return func;\n },\n\n IteratorComplete: function (iterResult) {\n return !!iterResult.done;\n },\n\n IteratorClose: function (iterator, completionIsThrow) {\n var returnMethod = ES.GetMethod(iterator, 'return');\n if (returnMethod === void 0) {\n return;\n }\n var innerResult, innerException;\n try {\n innerResult = ES.Call(returnMethod, iterator);\n } catch (e) {\n innerException = e;\n }\n if (completionIsThrow) {\n return;\n }\n if (innerException) {\n throw innerException;\n }\n if (!ES.TypeIsObject(innerResult)) {\n throw new TypeError(\"Iterator's return method returned a non-object.\");\n }\n },\n\n IteratorNext: function (it) {\n var result = arguments.length > 1 ? it.next(arguments[1]) : it.next();\n if (!ES.TypeIsObject(result)) {\n throw new TypeError('bad iterator');\n }\n return result;\n },\n\n IteratorStep: function (it) {\n var result = ES.IteratorNext(it);\n var done = ES.IteratorComplete(result);\n return done ? false : result;\n },\n\n Construct: function (C, args, newTarget, isES6internal) {\n var target = typeof newTarget === 'undefined' ? C : newTarget;\n\n if (!isES6internal && Reflect.construct) {\n // Try to use Reflect.construct if available\n return Reflect.construct(C, args, target);\n }\n // OK, we have to fake it. This will only work if the\n // C.[[ConstructorKind]] == \"base\" -- but that's the only\n // kind we can make in ES5 code anyway.\n\n // OrdinaryCreateFromConstructor(target, \"%ObjectPrototype%\")\n var proto = target.prototype;\n if (!ES.TypeIsObject(proto)) {\n proto = Object.prototype;\n }\n var obj = create(proto);\n // Call the constructor.\n var result = ES.Call(C, obj, args);\n return ES.TypeIsObject(result) ? result : obj;\n },\n\n SpeciesConstructor: function (O, defaultConstructor) {\n var C = O.constructor;\n if (C === void 0) {\n return defaultConstructor;\n }\n if (!ES.TypeIsObject(C)) {\n throw new TypeError('Bad constructor');\n }\n var S = C[symbolSpecies];\n if (isNullOrUndefined(S)) {\n return defaultConstructor;\n }\n if (!ES.IsConstructor(S)) {\n throw new TypeError('Bad @@species');\n }\n return S;\n },\n\n CreateHTML: function (string, tag, attribute, value) {\n var S = ES.ToString(string);\n var p1 = '<' + tag;\n if (attribute !== '') {\n var V = ES.ToString(value);\n var escapedV = V.replace(/\"/g, '"');\n p1 += ' ' + attribute + '=\"' + escapedV + '\"';\n }\n var p2 = p1 + '>';\n var p3 = p2 + S;\n return p3 + '</' + tag + '>';\n },\n\n IsRegExp: function IsRegExp(argument) {\n if (!ES.TypeIsObject(argument)) {\n return false;\n }\n var isRegExp = argument[Symbol.match];\n if (typeof isRegExp !== 'undefined') {\n return !!isRegExp;\n }\n return Type.regex(argument);\n },\n\n ToString: function ToString(string) {\n return $String(string);\n }\n };\n\n // Well-known Symbol shims\n if (supportsDescriptors && hasSymbols) {\n var defineWellKnownSymbol = function defineWellKnownSymbol(name) {\n if (Type.symbol(Symbol[name])) {\n return Symbol[name];\n }\n // eslint-disable-next-line no-restricted-properties\n var sym = Symbol['for']('Symbol.' + name);\n Object.defineProperty(Symbol, name, {\n configurable: false,\n enumerable: false,\n writable: false,\n value: sym\n });\n return sym;\n };\n if (!Type.symbol(Symbol.search)) {\n var symbolSearch = defineWellKnownSymbol('search');\n var originalSearch = String.prototype.search;\n defineProperty(RegExp.prototype, symbolSearch, function search(string) {\n return ES.Call(originalSearch, string, [this]);\n });\n var searchShim = function search(regexp) {\n var O = ES.RequireObjectCoercible(this);\n if (!isNullOrUndefined(regexp)) {\n var searcher = ES.GetMethod(regexp, symbolSearch);\n if (typeof searcher !== 'undefined') {\n return ES.Call(searcher, regexp, [O]);\n }\n }\n return ES.Call(originalSearch, O, [ES.ToString(regexp)]);\n };\n overrideNative(String.prototype, 'search', searchShim);\n }\n if (!Type.symbol(Symbol.replace)) {\n var symbolReplace = defineWellKnownSymbol('replace');\n var originalReplace = String.prototype.replace;\n defineProperty(RegExp.prototype, symbolReplace, function replace(string, replaceValue) {\n return ES.Call(originalReplace, string, [this, replaceValue]);\n });\n var replaceShim = function replace(searchValue, replaceValue) {\n var O = ES.RequireObjectCoercible(this);\n if (!isNullOrUndefined(searchValue)) {\n var replacer = ES.GetMethod(searchValue, symbolReplace);\n if (typeof replacer !== 'undefined') {\n return ES.Call(replacer, searchValue, [O, replaceValue]);\n }\n }\n return ES.Call(originalReplace, O, [ES.ToString(searchValue), replaceValue]);\n };\n overrideNative(String.prototype, 'replace', replaceShim);\n }\n if (!Type.symbol(Symbol.split)) {\n var symbolSplit = defineWellKnownSymbol('split');\n var originalSplit = String.prototype.split;\n defineProperty(RegExp.prototype, symbolSplit, function split(string, limit) {\n return ES.Call(originalSplit, string, [this, limit]);\n });\n var splitShim = function split(separator, limit) {\n var O = ES.RequireObjectCoercible(this);\n if (!isNullOrUndefined(separator)) {\n var splitter = ES.GetMethod(separator, symbolSplit);\n if (typeof splitter !== 'undefined') {\n return ES.Call(splitter, separator, [O, limit]);\n }\n }\n return ES.Call(originalSplit, O, [ES.ToString(separator), limit]);\n };\n overrideNative(String.prototype, 'split', splitShim);\n }\n var symbolMatchExists = Type.symbol(Symbol.match);\n var stringMatchIgnoresSymbolMatch = symbolMatchExists && (function () {\n // Firefox 41, through Nightly 45 has Symbol.match, but String#match ignores it.\n // Firefox 40 and below have Symbol.match but String#match works fine.\n var o = {};\n o[Symbol.match] = function () { return 42; };\n return 'a'.match(o) !== 42;\n }());\n if (!symbolMatchExists || stringMatchIgnoresSymbolMatch) {\n var symbolMatch = defineWellKnownSymbol('match');\n\n var originalMatch = String.prototype.match;\n defineProperty(RegExp.prototype, symbolMatch, function match(string) {\n return ES.Call(originalMatch, string, [this]);\n });\n\n var matchShim = function match(regexp) {\n var O = ES.RequireObjectCoercible(this);\n if (!isNullOrUndefined(regexp)) {\n var matcher = ES.GetMethod(regexp, symbolMatch);\n if (typeof matcher !== 'undefined') {\n return ES.Call(matcher, regexp, [O]);\n }\n }\n return ES.Call(originalMatch, O, [ES.ToString(regexp)]);\n };\n overrideNative(String.prototype, 'match', matchShim);\n }\n }\n\n var wrapConstructor = function wrapConstructor(original, replacement, keysToSkip) {\n Value.preserveToString(replacement, original);\n if (Object.setPrototypeOf) {\n // sets up proper prototype chain where possible\n Object.setPrototypeOf(original, replacement);\n }\n if (supportsDescriptors) {\n _forEach(Object.getOwnPropertyNames(original), function (key) {\n if (key in noop || keysToSkip[key]) { return; }\n Value.proxy(original, key, replacement);\n });\n } else {\n _forEach(Object.keys(original), function (key) {\n if (key in noop || keysToSkip[key]) { return; }\n replacement[key] = original[key];\n });\n }\n replacement.prototype = original.prototype;\n Value.redefine(original.prototype, 'constructor', replacement);\n };\n\n var defaultSpeciesGetter = function () { return this; };\n var addDefaultSpecies = function (C) {\n if (supportsDescriptors && !_hasOwnProperty(C, symbolSpecies)) {\n Value.getter(C, symbolSpecies, defaultSpeciesGetter);\n }\n };\n\n var addIterator = function (prototype, impl) {\n var implementation = impl || function iterator() { return this; };\n defineProperty(prototype, $iterator$, implementation);\n if (!prototype[$iterator$] && Type.symbol($iterator$)) {\n // implementations are buggy when $iterator$ is a Symbol\n prototype[$iterator$] = implementation;\n }\n };\n\n var createDataProperty = function createDataProperty(object, name, value) {\n if (supportsDescriptors) {\n Object.defineProperty(object, name, {\n configurable: true,\n enumerable: true,\n writable: true,\n value: value\n });\n } else {\n object[name] = value;\n }\n };\n var createDataPropertyOrThrow = function createDataPropertyOrThrow(object, name, value) {\n createDataProperty(object, name, value);\n if (!ES.SameValue(object[name], value)) {\n throw new TypeError('property is nonconfigurable');\n }\n };\n\n var emulateES6construct = function (o, defaultNewTarget, defaultProto, slots) {\n // This is an es5 approximation to es6 construct semantics. in es6,\n // 'new Foo' invokes Foo.[[Construct]] which (for almost all objects)\n // just sets the internal variable NewTarget (in es6 syntax `new.target`)\n // to Foo and then returns Foo().\n\n // Many ES6 object then have constructors of the form:\n // 1. If NewTarget is undefined, throw a TypeError exception\n // 2. Let xxx by OrdinaryCreateFromConstructor(NewTarget, yyy, zzz)\n\n // So we're going to emulate those first two steps.\n if (!ES.TypeIsObject(o)) {\n throw new TypeError('Constructor requires `new`: ' + defaultNewTarget.name);\n }\n var proto = defaultNewTarget.prototype;\n if (!ES.TypeIsObject(proto)) {\n proto = defaultProto;\n }\n var obj = create(proto);\n for (var name in slots) {\n if (_hasOwnProperty(slots, name)) {\n var value = slots[name];\n defineProperty(obj, name, value, true);\n }\n }\n return obj;\n };\n\n // Firefox 31 reports this function's length as 0\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1062484\n if (String.fromCodePoint && String.fromCodePoint.length !== 1) {\n var originalFromCodePoint = String.fromCodePoint;\n overrideNative(String, 'fromCodePoint', function fromCodePoint(codePoints) {\n return ES.Call(originalFromCodePoint, this, arguments);\n });\n }\n\n var StringShims = {\n fromCodePoint: function fromCodePoint(codePoints) {\n var result = [];\n var next;\n for (var i = 0, length = arguments.length; i < length; i++) {\n next = Number(arguments[i]);\n if (!ES.SameValue(next, ES.ToInteger(next)) || next < 0 || next > 0x10FFFF) {\n throw new RangeError('Invalid code point ' + next);\n }\n\n if (next < 0x10000) {\n _push(result, String.fromCharCode(next));\n } else {\n next -= 0x10000;\n _push(result, String.fromCharCode((next >> 10) + 0xD800));\n _push(result, String.fromCharCode((next % 0x400) + 0xDC00));\n }\n }\n return result.join('');\n },\n\n raw: function raw(callSite) {\n var cooked = ES.ToObject(callSite, 'bad callSite');\n var rawString = ES.ToObject(cooked.raw, 'bad raw value');\n var len = rawString.length;\n var literalsegments = ES.ToLength(len);\n if (literalsegments <= 0) {\n return '';\n }\n\n var stringElements = [];\n var nextIndex = 0;\n var nextKey, next, nextSeg, nextSub;\n while (nextIndex < literalsegments) {\n nextKey = ES.ToString(nextIndex);\n nextSeg = ES.ToString(rawString[nextKey]);\n _push(stringElements, nextSeg);\n if (nextIndex + 1 >= literalsegments) {\n break;\n }\n next = nextIndex + 1 < arguments.length ? arguments[nextIndex + 1] : '';\n nextSub = ES.ToString(next);\n _push(stringElements, nextSub);\n nextIndex += 1;\n }\n return stringElements.join('');\n }\n };\n if (String.raw && String.raw({ raw: { 0: 'x', 1: 'y', length: 2 } }) !== 'xy') {\n // IE 11 TP has a broken String.raw implementation\n overrideNative(String, 'raw', StringShims.raw);\n }\n defineProperties(String, StringShims);\n\n // Fast repeat, uses the `Exponentiation by squaring` algorithm.\n // Perf: http://jsperf.com/string-repeat2/2\n var stringRepeat = function repeat(s, times) {\n if (times < 1) { return ''; }\n if (times % 2) { return repeat(s, times - 1) + s; }\n var half = repeat(s, times / 2);\n return half + half;\n };\n var stringMaxLength = Infinity;\n\n var StringPrototypeShims = {\n repeat: function repeat(times) {\n var thisStr = ES.ToString(ES.RequireObjectCoercible(this));\n var numTimes = ES.ToInteger(times);\n if (numTimes < 0 || numTimes >= stringMaxLength) {\n throw new RangeError('repeat count must be less than infinity and not overflow maximum string size');\n }\n return stringRepeat(thisStr, numTimes);\n },\n\n startsWith: function startsWith(searchString) {\n var S = ES.ToString(ES.RequireObjectCoercible(this));\n if (ES.IsRegExp(searchString)) {\n throw new TypeError('Cannot call method \"startsWith\" with a regex');\n }\n var searchStr = ES.ToString(searchString);\n var position;\n if (arguments.length > 1) {\n position = arguments[1];\n }\n var start = _max(ES.ToInteger(position), 0);\n return _strSlice(S, start, start + searchStr.length) === searchStr;\n },\n\n endsWith: function endsWith(searchString) {\n var S = ES.ToString(ES.RequireObjectCoercible(this));\n if (ES.IsRegExp(searchString)) {\n throw new TypeError('Cannot call method \"endsWith\" with a regex');\n }\n var searchStr = ES.ToString(searchString);\n var len = S.length;\n var endPosition;\n if (arguments.length > 1) {\n endPosition = arguments[1];\n }\n var pos = typeof endPosition === 'undefined' ? len : ES.ToInteger(endPosition);\n var end = _min(_max(pos, 0), len);\n return _strSlice(S, end - searchStr.length, end) === searchStr;\n },\n\n includes: function includes(searchString) {\n if (ES.IsRegExp(searchString)) {\n throw new TypeError('\"includes\" does not accept a RegExp');\n }\n var searchStr = ES.ToString(searchString);\n var position;\n if (arguments.length > 1) {\n position = arguments[1];\n }\n // Somehow this trick makes method 100% compat with the spec.\n return _indexOf(this, searchStr, position) !== -1;\n },\n\n codePointAt: function codePointAt(pos) {\n var thisStr = ES.ToString(ES.RequireObjectCoercible(this));\n var position = ES.ToInteger(pos);\n var length = thisStr.length;\n if (position >= 0 && position < length) {\n var first = thisStr.charCodeAt(position);\n var isEnd = position + 1 === length;\n if (first < 0xD800 || first > 0xDBFF || isEnd) { return first; }\n var second = thisStr.charCodeAt(position + 1);\n if (second < 0xDC00 || second > 0xDFFF) { return first; }\n return ((first - 0xD800) * 1024) + (second - 0xDC00) + 0x10000;\n }\n }\n };\n if (String.prototype.includes && 'a'.includes('a', Infinity) !== false) {\n overrideNative(String.prototype, 'includes', StringPrototypeShims.includes);\n }\n\n if (String.prototype.startsWith && String.prototype.endsWith) {\n var startsWithRejectsRegex = throwsError(function () {\n /* throws if spec-compliant */\n return '/a/'.startsWith(/a/);\n });\n var startsWithHandlesInfinity = valueOrFalseIfThrows(function () {\n return 'abc'.startsWith('a', Infinity) === false;\n });\n if (!startsWithRejectsRegex || !startsWithHandlesInfinity) {\n // Firefox (< 37?) and IE 11 TP have a noncompliant startsWith implementation\n overrideNative(String.prototype, 'startsWith', StringPrototypeShims.startsWith);\n overrideNative(String.prototype, 'endsWith', StringPrototypeShims.endsWith);\n }\n }\n if (hasSymbols) {\n var startsWithSupportsSymbolMatch = valueOrFalseIfThrows(function () {\n var re = /a/;\n re[Symbol.match] = false;\n return '/a/'.startsWith(re);\n });\n if (!startsWithSupportsSymbolMatch) {\n overrideNative(String.prototype, 'startsWith', StringPrototypeShims.startsWith);\n }\n var endsWithSupportsSymbolMatch = valueOrFalseIfThrows(function () {\n var re = /a/;\n re[Symbol.match] = false;\n return '/a/'.endsWith(re);\n });\n if (!endsWithSupportsSymbolMatch) {\n overrideNative(String.prototype, 'endsWith', StringPrototypeShims.endsWith);\n }\n var includesSupportsSymbolMatch = valueOrFalseIfThrows(function () {\n var re = /a/;\n re[Symbol.match] = false;\n return '/a/'.includes(re);\n });\n if (!includesSupportsSymbolMatch) {\n overrideNative(String.prototype, 'includes', StringPrototypeShims.includes);\n }\n }\n\n defineProperties(String.prototype, StringPrototypeShims);\n\n // whitespace from: http://es5.github.io/#x15.5.4.20\n // implementation from https://github.com/es-shims/es5-shim/blob/v3.4.0/es5-shim.js#L1304-L1324\n var ws = [\n '\\x09\\x0A\\x0B\\x0C\\x0D\\x20\\xA0\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003',\n '\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000\\u2028',\n '\\u2029\\uFEFF'\n ].join('');\n var trimRegexp = new RegExp('(^[' + ws + ']+)|([' + ws + ']+$)', 'g');\n var trimShim = function trim() {\n return ES.ToString(ES.RequireObjectCoercible(this)).replace(trimRegexp, '');\n };\n var nonWS = ['\\u0085', '\\u200b', '\\ufffe'].join('');\n var nonWSregex = new RegExp('[' + nonWS + ']', 'g');\n var isBadHexRegex = /^[-+]0x[0-9a-f]+$/i;\n var hasStringTrimBug = nonWS.trim().length !== nonWS.length;\n defineProperty(String.prototype, 'trim', trimShim, hasStringTrimBug);\n\n // Given an argument x, it will return an IteratorResult object,\n // with value set to x and done to false.\n // Given no arguments, it will return an iterator completion object.\n var iteratorResult = function (x) {\n return { value: x, done: arguments.length === 0 };\n };\n\n // see http://www.ecma-international.org/ecma-262/6.0/#sec-string.prototype-@@iterator\n var StringIterator = function (s) {\n ES.RequireObjectCoercible(s);\n this._s = ES.ToString(s);\n this._i = 0;\n };\n StringIterator.prototype.next = function () {\n var s = this._s;\n var i = this._i;\n if (typeof s === 'undefined' || i >= s.length) {\n this._s = void 0;\n return iteratorResult();\n }\n var first = s.charCodeAt(i);\n var second, len;\n if (first < 0xD800 || first > 0xDBFF || (i + 1) === s.length) {\n len = 1;\n } else {\n second = s.charCodeAt(i + 1);\n len = (second < 0xDC00 || second > 0xDFFF) ? 1 : 2;\n }\n this._i = i + len;\n return iteratorResult(s.substr(i, len));\n };\n addIterator(StringIterator.prototype);\n addIterator(String.prototype, function () {\n return new StringIterator(this);\n });\n\n var ArrayShims = {\n from: function from(items) {\n var C = this;\n var mapFn;\n if (arguments.length > 1) {\n mapFn = arguments[1];\n }\n var mapping, T;\n if (typeof mapFn === 'undefined') {\n mapping = false;\n } else {\n if (!ES.IsCallable(mapFn)) {\n throw new TypeError('Array.from: when provided, the second argument must be a function');\n }\n if (arguments.length > 2) {\n T = arguments[2];\n }\n mapping = true;\n }\n\n // Note that that Arrays will use ArrayIterator:\n // https://bugs.ecmascript.org/show_bug.cgi?id=2416\n var usingIterator = typeof (isArguments(items) || ES.GetMethod(items, $iterator$)) !== 'undefined';\n\n var length, result, i;\n if (usingIterator) {\n result = ES.IsConstructor(C) ? Object(new C()) : [];\n var iterator = ES.GetIterator(items);\n var next, nextValue;\n\n i = 0;\n while (true) {\n next = ES.IteratorStep(iterator);\n if (next === false) {\n break;\n }\n nextValue = next.value;\n try {\n if (mapping) {\n nextValue = typeof T === 'undefined' ? mapFn(nextValue, i) : _call(mapFn, T, nextValue, i);\n }\n result[i] = nextValue;\n } catch (e) {\n ES.IteratorClose(iterator, true);\n throw e;\n }\n i += 1;\n }\n length = i;\n } else {\n var arrayLike = ES.ToObject(items);\n length = ES.ToLength(arrayLike.length);\n result = ES.IsConstructor(C) ? Object(new C(length)) : new Array(length);\n var value;\n for (i = 0; i < length; ++i) {\n value = arrayLike[i];\n if (mapping) {\n value = typeof T === 'undefined' ? mapFn(value, i) : _call(mapFn, T, value, i);\n }\n createDataPropertyOrThrow(result, i, value);\n }\n }\n\n result.length = length;\n return result;\n },\n\n of: function of() {\n var len = arguments.length;\n var C = this;\n var A = isArray(C) || !ES.IsCallable(C) ? new Array(len) : ES.Construct(C, [len]);\n for (var k = 0; k < len; ++k) {\n createDataPropertyOrThrow(A, k, arguments[k]);\n }\n A.length = len;\n return A;\n }\n };\n defineProperties(Array, ArrayShims);\n addDefaultSpecies(Array);\n\n // Our ArrayIterator is private; see\n // https://github.com/paulmillr/es6-shim/issues/252\n ArrayIterator = function (array, kind) {\n this.i = 0;\n this.array = array;\n this.kind = kind;\n };\n\n defineProperties(ArrayIterator.prototype, {\n next: function () {\n var i = this.i;\n var array = this.array;\n if (!(this instanceof ArrayIterator)) {\n throw new TypeError('Not an ArrayIterator');\n }\n if (typeof array !== 'undefined') {\n var len = ES.ToLength(array.length);\n for (; i < len; i++) {\n var kind = this.kind;\n var retval;\n if (kind === 'key') {\n retval = i;\n } else if (kind === 'value') {\n retval = array[i];\n } else if (kind === 'entry') {\n retval = [i, array[i]];\n }\n this.i = i + 1;\n return iteratorResult(retval);\n }\n }\n this.array = void 0;\n return iteratorResult();\n }\n });\n addIterator(ArrayIterator.prototype);\n\n /*\n var orderKeys = function orderKeys(a, b) {\n var aNumeric = String(ES.ToInteger(a)) === a;\n var bNumeric = String(ES.ToInteger(b)) === b;\n if (aNumeric && bNumeric) {\n return b - a;\n } else if (aNumeric && !bNumeric) {\n return -1;\n } else if (!aNumeric && bNumeric) {\n return 1;\n } else {\n return a.localeCompare(b);\n }\n };\n\n var getAllKeys = function getAllKeys(object) {\n var ownKeys = [];\n var keys = [];\n\n for (var key in object) {\n _push(_hasOwnProperty(object, key) ? ownKeys : keys, key);\n }\n _sort(ownKeys, orderKeys);\n _sort(keys, orderKeys);\n\n return _concat(ownKeys, keys);\n };\n */\n\n // note: this is positioned here because it depends on ArrayIterator\n var arrayOfSupportsSubclassing = Array.of === ArrayShims.of || (function () {\n // Detects a bug in Webkit nightly r181886\n var Foo = function Foo(len) { this.length = len; };\n Foo.prototype = [];\n var fooArr = Array.of.apply(Foo, [1, 2]);\n return fooArr instanceof Foo && fooArr.length === 2;\n }());\n if (!arrayOfSupportsSubclassing) {\n overrideNative(Array, 'of', ArrayShims.of);\n }\n\n var ArrayPrototypeShims = {\n copyWithin: function copyWithin(target, start) {\n var o = ES.ToObject(this);\n var len = ES.ToLength(o.length);\n var relativeTarget = ES.ToInteger(target);\n var relativeStart = ES.ToInteger(start);\n var to = relativeTarget < 0 ? _max(len + relativeTarget, 0) : _min(relativeTarget, len);\n var from = relativeStart < 0 ? _max(len + relativeStart, 0) : _min(relativeStart, len);\n var end;\n if (arguments.length > 2) {\n end = arguments[2];\n }\n var relativeEnd = typeof end === 'undefined' ? len : ES.ToInteger(end);\n var finalItem = relativeEnd < 0 ? _max(len + relativeEnd, 0) : _min(relativeEnd, len);\n var count = _min(finalItem - from, len - to);\n var direction = 1;\n if (from < to && to < (from + count)) {\n direction = -1;\n from += count - 1;\n to += count - 1;\n }\n while (count > 0) {\n if (from in o) {\n o[to] = o[from];\n } else {\n delete o[to];\n }\n from += direction;\n to += direction;\n count -= 1;\n }\n return o;\n },\n\n fill: function fill(value) {\n var start;\n if (arguments.length > 1) {\n start = arguments[1];\n }\n var end;\n if (arguments.length > 2) {\n end = arguments[2];\n }\n var O = ES.ToObject(this);\n var len = ES.ToLength(O.length);\n start = ES.ToInteger(typeof start === 'undefined' ? 0 : start);\n end = ES.ToInteger(typeof end === 'undefined' ? len : end);\n\n var relativeStart = start < 0 ? _max(len + start, 0) : _min(start, len);\n var relativeEnd = end < 0 ? len + end : end;\n\n for (var i = relativeStart; i < len && i < relativeEnd; ++i) {\n O[i] = value;\n }\n return O;\n },\n\n find: function find(predicate) {\n var list = ES.ToObject(this);\n var length = ES.ToLength(list.length);\n if (!ES.IsCallable(predicate)) {\n throw new TypeError('Array#find: predicate must be a function');\n }\n var thisArg = arguments.length > 1 ? arguments[1] : null;\n for (var i = 0, value; i < length; i++) {\n value = list[i];\n if (thisArg) {\n if (_call(predicate, thisArg, value, i, list)) {\n return value;\n }\n } else if (predicate(value, i, list)) {\n return value;\n }\n }\n },\n\n findIndex: function findIndex(predicate) {\n var list = ES.ToObject(this);\n var length = ES.ToLength(list.length);\n if (!ES.IsCallable(predicate)) {\n throw new TypeError('Array#findIndex: predicate must be a function');\n }\n var thisArg = arguments.length > 1 ? arguments[1] : null;\n for (var i = 0; i < length; i++) {\n if (thisArg) {\n if (_call(predicate, thisArg, list[i], i, list)) {\n return i;\n }\n } else if (predicate(list[i], i, list)) {\n return i;\n }\n }\n return -1;\n },\n\n keys: function keys() {\n return new ArrayIterator(this, 'key');\n },\n\n values: function values() {\n return new ArrayIterator(this, 'value');\n },\n\n entries: function entries() {\n return new ArrayIterator(this, 'entry');\n }\n };\n // Safari 7.1 defines Array#keys and Array#entries natively,\n // but the resulting ArrayIterator objects don't have a \"next\" method.\n if (Array.prototype.keys && !ES.IsCallable([1].keys().next)) {\n delete Array.prototype.keys;\n }\n if (Array.prototype.entries && !ES.IsCallable([1].entries().next)) {\n delete Array.prototype.entries;\n }\n\n // Chrome 38 defines Array#keys and Array#entries, and Array#@@iterator, but not Array#values\n if (Array.prototype.keys && Array.prototype.entries && !Array.prototype.values && Array.prototype[$iterator$]) {\n defineProperties(Array.prototype, {\n values: Array.prototype[$iterator$]\n });\n if (Type.symbol(Symbol.unscopables)) {\n Array.prototype[Symbol.unscopables].values = true;\n }\n }\n // Chrome 40 defines Array#values with the incorrect name, although Array#{keys,entries} have the correct name\n if (functionsHaveNames && Array.prototype.values && Array.prototype.values.name !== 'values') {\n var originalArrayPrototypeValues = Array.prototype.values;\n overrideNative(Array.prototype, 'values', function values() { return ES.Call(originalArrayPrototypeValues, this, arguments); });\n defineProperty(Array.prototype, $iterator$, Array.prototype.values, true);\n }\n defineProperties(Array.prototype, ArrayPrototypeShims);\n\n if (1 / [true].indexOf(true, -0) < 0) {\n // indexOf when given a position arg of -0 should return +0.\n // https://github.com/tc39/ecma262/pull/316\n defineProperty(Array.prototype, 'indexOf', function indexOf(searchElement) {\n var value = _arrayIndexOfApply(this, arguments);\n if (value === 0 && (1 / value) < 0) {\n return 0;\n }\n return value;\n }, true);\n }\n\n addIterator(Array.prototype, function () { return this.values(); });\n // Chrome defines keys/values/entries on Array, but doesn't give us\n // any way to identify its iterator. So add our own shimmed field.\n if (Object.getPrototypeOf) {\n addIterator(Object.getPrototypeOf([].values()));\n }\n\n // note: this is positioned here because it relies on Array#entries\n var arrayFromSwallowsNegativeLengths = (function () {\n // Detects a Firefox bug in v32\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1063993\n return valueOrFalseIfThrows(function () {\n return Array.from({ length: -1 }).length === 0;\n });\n }());\n var arrayFromHandlesIterables = (function () {\n // Detects a bug in Webkit nightly r181886\n var arr = Array.from([0].entries());\n return arr.length === 1 && isArray(arr[0]) && arr[0][0] === 0 && arr[0][1] === 0;\n }());\n if (!arrayFromSwallowsNegativeLengths || !arrayFromHandlesIterables) {\n overrideNative(Array, 'from', ArrayShims.from);\n }\n var arrayFromHandlesUndefinedMapFunction = (function () {\n // Microsoft Edge v0.11 throws if the mapFn argument is *provided* but undefined,\n // but the spec doesn't care if it's provided or not - undefined doesn't throw.\n return valueOrFalseIfThrows(function () {\n return Array.from([0], void 0);\n });\n }());\n if (!arrayFromHandlesUndefinedMapFunction) {\n var origArrayFrom = Array.from;\n overrideNative(Array, 'from', function from(items) {\n if (arguments.length > 1 && typeof arguments[1] !== 'undefined') {\n return ES.Call(origArrayFrom, this, arguments);\n } else {\n return _call(origArrayFrom, this, items);\n }\n });\n }\n\n var int32sAsOne = -(Math.pow(2, 32) - 1);\n var toLengthsCorrectly = function (method, reversed) {\n var obj = { length: int32sAsOne };\n obj[reversed ? (obj.length >>> 0) - 1 : 0] = true;\n return valueOrFalseIfThrows(function () {\n _call(method, obj, function () {\n // note: in nonconforming browsers, this will be called\n // -1 >>> 0 times, which is 4294967295, so the throw matters.\n throw new RangeError('should not reach here');\n }, []);\n return true;\n });\n };\n if (!toLengthsCorrectly(Array.prototype.forEach)) {\n var originalForEach = Array.prototype.forEach;\n overrideNative(Array.prototype, 'forEach', function forEach(callbackFn) {\n return ES.Call(originalForEach, this.length >= 0 ? this : [], arguments);\n }, true);\n }\n if (!toLengthsCorrectly(Array.prototype.map)) {\n var originalMap = Array.prototype.map;\n overrideNative(Array.prototype, 'map', function map(callbackFn) {\n return ES.Call(originalMap, this.length >= 0 ? this : [], arguments);\n }, true);\n }\n if (!toLengthsCorrectly(Array.prototype.filter)) {\n var originalFilter = Array.prototype.filter;\n overrideNative(Array.prototype, 'filter', function filter(callbackFn) {\n return ES.Call(originalFilter, this.length >= 0 ? this : [], arguments);\n }, true);\n }\n if (!toLengthsCorrectly(Array.prototype.some)) {\n var originalSome = Array.prototype.some;\n overrideNative(Array.prototype, 'some', function some(callbackFn) {\n return ES.Call(originalSome, this.length >= 0 ? this : [], arguments);\n }, true);\n }\n if (!toLengthsCorrectly(Array.prototype.every)) {\n var originalEvery = Array.prototype.every;\n overrideNative(Array.prototype, 'every', function every(callbackFn) {\n return ES.Call(originalEvery, this.length >= 0 ? this : [], arguments);\n }, true);\n }\n if (!toLengthsCorrectly(Array.prototype.reduce)) {\n var originalReduce = Array.prototype.reduce;\n overrideNative(Array.prototype, 'reduce', function reduce(callbackFn) {\n return ES.Call(originalReduce, this.length >= 0 ? this : [], arguments);\n }, true);\n }\n if (!toLengthsCorrectly(Array.prototype.reduceRight, true)) {\n var originalReduceRight = Array.prototype.reduceRight;\n overrideNative(Array.prototype, 'reduceRight', function reduceRight(callbackFn) {\n return ES.Call(originalReduceRight, this.length >= 0 ? this : [], arguments);\n }, true);\n }\n\n var lacksOctalSupport = Number('0o10') !== 8;\n var lacksBinarySupport = Number('0b10') !== 2;\n var trimsNonWhitespace = _some(nonWS, function (c) {\n return Number(c + 0 + c) === 0;\n });\n if (lacksOctalSupport || lacksBinarySupport || trimsNonWhitespace) {\n var OrigNumber = Number;\n var binaryRegex = /^0b[01]+$/i;\n var octalRegex = /^0o[0-7]+$/i;\n // Note that in IE 8, RegExp.prototype.test doesn't seem to exist: ie, \"test\" is an own property of regexes. wtf.\n var isBinary = binaryRegex.test.bind(binaryRegex);\n var isOctal = octalRegex.test.bind(octalRegex);\n var toPrimitive = function (O) { // need to replace this with `es-to-primitive/es6`\n var result;\n if (typeof O.valueOf === 'function') {\n result = O.valueOf();\n if (Type.primitive(result)) {\n return result;\n }\n }\n if (typeof O.toString === 'function') {\n result = O.toString();\n if (Type.primitive(result)) {\n return result;\n }\n }\n throw new TypeError('No default value');\n };\n var hasNonWS = nonWSregex.test.bind(nonWSregex);\n var isBadHex = isBadHexRegex.test.bind(isBadHexRegex);\n var NumberShim = (function () {\n // this is wrapped in an IIFE because of IE 6-8's wacky scoping issues with named function expressions.\n var NumberShim = function Number(value) {\n var primValue;\n if (arguments.length > 0) {\n primValue = Type.primitive(value) ? value : toPrimitive(value, 'number');\n } else {\n primValue = 0;\n }\n if (typeof primValue === 'string') {\n primValue = ES.Call(trimShim, primValue);\n if (isBinary(primValue)) {\n primValue = parseInt(_strSlice(primValue, 2), 2);\n } else if (isOctal(primValue)) {\n primValue = parseInt(_strSlice(primValue, 2), 8);\n } else if (hasNonWS(primValue) || isBadHex(primValue)) {\n primValue = NaN;\n }\n }\n var receiver = this;\n var valueOfSucceeds = valueOrFalseIfThrows(function () {\n OrigNumber.prototype.valueOf.call(receiver);\n return true;\n });\n if (receiver instanceof NumberShim && !valueOfSucceeds) {\n return new OrigNumber(primValue);\n }\n /* jshint newcap: false */\n return OrigNumber(primValue);\n /* jshint newcap: true */\n };\n return NumberShim;\n }());\n wrapConstructor(OrigNumber, NumberShim, {});\n // this is necessary for ES3 browsers, where these properties are non-enumerable.\n defineProperties(NumberShim, {\n NaN: OrigNumber.NaN,\n MAX_VALUE: OrigNumber.MAX_VALUE,\n MIN_VALUE: OrigNumber.MIN_VALUE,\n NEGATIVE_INFINITY: OrigNumber.NEGATIVE_INFINITY,\n POSITIVE_INFINITY: OrigNumber.POSITIVE_INFINITY\n });\n /* globals Number: true */\n /* eslint-disable no-undef, no-global-assign */\n /* jshint -W020 */\n Number = NumberShim;\n Value.redefine(globals, 'Number', NumberShim);\n /* jshint +W020 */\n /* eslint-enable no-undef, no-global-assign */\n /* globals Number: false */\n }\n\n var maxSafeInteger = Math.pow(2, 53) - 1;\n defineProperties(Number, {\n MAX_SAFE_INTEGER: maxSafeInteger,\n MIN_SAFE_INTEGER: -maxSafeInteger,\n EPSILON: 2.220446049250313e-16,\n\n parseInt: globals.parseInt,\n parseFloat: globals.parseFloat,\n\n isFinite: numberIsFinite,\n\n isInteger: function isInteger(value) {\n return numberIsFinite(value) && ES.ToInteger(value) === value;\n },\n\n isSafeInteger: function isSafeInteger(value) {\n return Number.isInteger(value) && _abs(value) <= Number.MAX_SAFE_INTEGER;\n },\n\n isNaN: numberIsNaN\n });\n // Firefox 37 has a conforming Number.parseInt, but it's not === to the global parseInt (fixed in v40)\n defineProperty(Number, 'parseInt', globals.parseInt, Number.parseInt !== globals.parseInt);\n\n // Work around bugs in Array#find and Array#findIndex -- early\n // implementations skipped holes in sparse arrays. (Note that the\n // implementations of find/findIndex indirectly use shimmed\n // methods of Number, so this test has to happen down here.)\n /*jshint elision: true */\n /* eslint-disable no-sparse-arrays */\n if ([, 1].find(function () { return true; }) === 1) {\n overrideNative(Array.prototype, 'find', ArrayPrototypeShims.find);\n }\n if ([, 1].findIndex(function () { return true; }) !== 0) {\n overrideNative(Array.prototype, 'findIndex', ArrayPrototypeShims.findIndex);\n }\n /* eslint-enable no-sparse-arrays */\n /*jshint elision: false */\n\n var isEnumerableOn = Function.bind.call(Function.bind, Object.prototype.propertyIsEnumerable);\n var ensureEnumerable = function ensureEnumerable(obj, prop) {\n if (supportsDescriptors && isEnumerableOn(obj, prop)) {\n Object.defineProperty(obj, prop, { enumerable: false });\n }\n };\n var sliceArgs = function sliceArgs() {\n // per https://github.com/petkaantonov/bluebird/wiki/Optimization-killers#32-leaking-arguments\n // and https://gist.github.com/WebReflection/4327762cb87a8c634a29\n var initial = Number(this);\n var len = arguments.length;\n var desiredArgCount = len - initial;\n var args = new Array(desiredArgCount < 0 ? 0 : desiredArgCount);\n for (var i = initial; i < len; ++i) {\n args[i - initial] = arguments[i];\n }\n return args;\n };\n var assignTo = function assignTo(source) {\n return function assignToSource(target, key) {\n target[key] = source[key];\n return target;\n };\n };\n var assignReducer = function (target, source) {\n var sourceKeys = keys(Object(source));\n var symbols;\n if (ES.IsCallable(Object.getOwnPropertySymbols)) {\n symbols = _filter(Object.getOwnPropertySymbols(Object(source)), isEnumerableOn(source));\n }\n return _reduce(_concat(sourceKeys, symbols || []), assignTo(source), target);\n };\n\n var ObjectShims = {\n // 19.1.3.1\n assign: function (target, source) {\n var to = ES.ToObject(target, 'Cannot convert undefined or null to object');\n return _reduce(ES.Call(sliceArgs, 1, arguments), assignReducer, to);\n },\n\n // Added in WebKit in https://bugs.webkit.org/show_bug.cgi?id=143865\n is: function is(a, b) {\n return ES.SameValue(a, b);\n }\n };\n var assignHasPendingExceptions = Object.assign && Object.preventExtensions && (function () {\n // Firefox 37 still has \"pending exception\" logic in its Object.assign implementation,\n // which is 72% slower than our shim, and Firefox 40's native implementation.\n var thrower = Object.preventExtensions({ 1: 2 });\n try {\n Object.assign(thrower, 'xy');\n } catch (e) {\n return thrower[1] === 'y';\n }\n }());\n if (assignHasPendingExceptions) {\n overrideNative(Object, 'assign', ObjectShims.assign);\n }\n defineProperties(Object, ObjectShims);\n\n if (supportsDescriptors) {\n var ES5ObjectShims = {\n // 19.1.3.9\n // shim from https://gist.github.com/WebReflection/5593554\n setPrototypeOf: (function (Object, magic) {\n var set;\n\n var checkArgs = function (O, proto) {\n if (!ES.TypeIsObject(O)) {\n throw new TypeError('cannot set prototype on a non-object');\n }\n if (!(proto === null || ES.TypeIsObject(proto))) {\n throw new TypeError('can only set prototype to an object or null' + proto);\n }\n };\n\n var setPrototypeOf = function (O, proto) {\n checkArgs(O, proto);\n _call(set, O, proto);\n return O;\n };\n\n try {\n // this works already in Firefox and Safari\n set = Object.getOwnPropertyDescriptor(Object.prototype, magic).set;\n _call(set, {}, null);\n } catch (e) {\n if (Object.prototype !== {}[magic]) {\n // IE < 11 cannot be shimmed\n return;\n }\n // probably Chrome or some old Mobile stock browser\n set = function (proto) {\n this[magic] = proto;\n };\n // please note that this will **not** work\n // in those browsers that do not inherit\n // __proto__ by mistake from Object.prototype\n // in these cases we should probably throw an error\n // or at least be informed about the issue\n setPrototypeOf.polyfill = setPrototypeOf(\n setPrototypeOf({}, null),\n Object.prototype\n ) instanceof Object;\n // setPrototypeOf.polyfill === true means it works as meant\n // setPrototypeOf.polyfill === false means it's not 100% reliable\n // setPrototypeOf.polyfill === undefined\n // or\n // setPrototypeOf.polyfill == null means it's not a polyfill\n // which means it works as expected\n // we can even delete Object.prototype.__proto__;\n }\n return setPrototypeOf;\n }(Object, '__proto__'))\n };\n\n defineProperties(Object, ES5ObjectShims);\n }\n\n // Workaround bug in Opera 12 where setPrototypeOf(x, null) doesn't work,\n // but Object.create(null) does.\n if (Object.setPrototypeOf && Object.getPrototypeOf &&\n Object.getPrototypeOf(Object.setPrototypeOf({}, null)) !== null &&\n Object.getPrototypeOf(Object.create(null)) === null) {\n (function () {\n var FAKENULL = Object.create(null);\n var gpo = Object.getPrototypeOf;\n var spo = Object.setPrototypeOf;\n Object.getPrototypeOf = function (o) {\n var result = gpo(o);\n return result === FAKENULL ? null : result;\n };\n Object.setPrototypeOf = function (o, p) {\n var proto = p === null ? FAKENULL : p;\n return spo(o, proto);\n };\n Object.setPrototypeOf.polyfill = false;\n }());\n }\n\n var objectKeysAcceptsPrimitives = !throwsError(function () { return Object.keys('foo'); });\n if (!objectKeysAcceptsPrimitives) {\n var originalObjectKeys = Object.keys;\n overrideNative(Object, 'keys', function keys(value) {\n return originalObjectKeys(ES.ToObject(value));\n });\n keys = Object.keys;\n }\n var objectKeysRejectsRegex = throwsError(function () { return Object.keys(/a/g); });\n if (objectKeysRejectsRegex) {\n var regexRejectingObjectKeys = Object.keys;\n overrideNative(Object, 'keys', function keys(value) {\n if (Type.regex(value)) {\n var regexKeys = [];\n for (var k in value) {\n if (_hasOwnProperty(value, k)) {\n _push(regexKeys, k);\n }\n }\n return regexKeys;\n }\n return regexRejectingObjectKeys(value);\n });\n keys = Object.keys;\n }\n\n if (Object.getOwnPropertyNames) {\n var objectGOPNAcceptsPrimitives = !throwsError(function () { return Object.getOwnPropertyNames('foo'); });\n if (!objectGOPNAcceptsPrimitives) {\n var cachedWindowNames = typeof window === 'object' ? Object.getOwnPropertyNames(window) : [];\n var originalObjectGetOwnPropertyNames = Object.getOwnPropertyNames;\n overrideNative(Object, 'getOwnPropertyNames', function getOwnPropertyNames(value) {\n var val = ES.ToObject(value);\n if (_toString(val) === '[object Window]') {\n try {\n return originalObjectGetOwnPropertyNames(val);\n } catch (e) {\n // IE bug where layout engine calls userland gOPN for cross-domain `window` objects\n return _concat([], cachedWindowNames);\n }\n }\n return originalObjectGetOwnPropertyNames(val);\n });\n }\n }\n if (Object.getOwnPropertyDescriptor) {\n var objectGOPDAcceptsPrimitives = !throwsError(function () { return Object.getOwnPropertyDescriptor('foo', 'bar'); });\n if (!objectGOPDAcceptsPrimitives) {\n var originalObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n overrideNative(Object, 'getOwnPropertyDescriptor', function getOwnPropertyDescriptor(value, property) {\n return originalObjectGetOwnPropertyDescriptor(ES.ToObject(value), property);\n });\n }\n }\n if (Object.seal) {\n var objectSealAcceptsPrimitives = !throwsError(function () { return Object.seal('foo'); });\n if (!objectSealAcceptsPrimitives) {\n var originalObjectSeal = Object.seal;\n overrideNative(Object, 'seal', function seal(value) {\n if (!ES.TypeIsObject(value)) { return value; }\n return originalObjectSeal(value);\n });\n }\n }\n if (Object.isSealed) {\n var objectIsSealedAcceptsPrimitives = !throwsError(function () { return Object.isSealed('foo'); });\n if (!objectIsSealedAcceptsPrimitives) {\n var originalObjectIsSealed = Object.isSealed;\n overrideNative(Object, 'isSealed', function isSealed(value) {\n if (!ES.TypeIsObject(value)) { return true; }\n return originalObjectIsSealed(value);\n });\n }\n }\n if (Object.freeze) {\n var objectFreezeAcceptsPrimitives = !throwsError(function () { return Object.freeze('foo'); });\n if (!objectFreezeAcceptsPrimitives) {\n var originalObjectFreeze = Object.freeze;\n overrideNative(Object, 'freeze', function freeze(value) {\n if (!ES.TypeIsObject(value)) { return value; }\n return originalObjectFreeze(value);\n });\n }\n }\n if (Object.isFrozen) {\n var objectIsFrozenAcceptsPrimitives = !throwsError(function () { return Object.isFrozen('foo'); });\n if (!objectIsFrozenAcceptsPrimitives) {\n var originalObjectIsFrozen = Object.isFrozen;\n overrideNative(Object, 'isFrozen', function isFrozen(value) {\n if (!ES.TypeIsObject(value)) { return true; }\n return originalObjectIsFrozen(value);\n });\n }\n }\n if (Object.preventExtensions) {\n var objectPreventExtensionsAcceptsPrimitives = !throwsError(function () { return Object.preventExtensions('foo'); });\n if (!objectPreventExtensionsAcceptsPrimitives) {\n var originalObjectPreventExtensions = Object.preventExtensions;\n overrideNative(Object, 'preventExtensions', function preventExtensions(value) {\n if (!ES.TypeIsObject(value)) { return value; }\n return originalObjectPreventExtensions(value);\n });\n }\n }\n if (Object.isExtensible) {\n var objectIsExtensibleAcceptsPrimitives = !throwsError(function () { return Object.isExtensible('foo'); });\n if (!objectIsExtensibleAcceptsPrimitives) {\n var originalObjectIsExtensible = Object.isExtensible;\n overrideNative(Object, 'isExtensible', function isExtensible(value) {\n if (!ES.TypeIsObject(value)) { return false; }\n return originalObjectIsExtensible(value);\n });\n }\n }\n if (Object.getPrototypeOf) {\n var objectGetProtoAcceptsPrimitives = !throwsError(function () { return Object.getPrototypeOf('foo'); });\n if (!objectGetProtoAcceptsPrimitives) {\n var originalGetProto = Object.getPrototypeOf;\n overrideNative(Object, 'getPrototypeOf', function getPrototypeOf(value) {\n return originalGetProto(ES.ToObject(value));\n });\n }\n }\n\n var hasFlags = supportsDescriptors && (function () {\n var desc = Object.getOwnPropertyDescriptor(RegExp.prototype, 'flags');\n return desc && ES.IsCallable(desc.get);\n }());\n if (supportsDescriptors && !hasFlags) {\n var regExpFlagsGetter = function flags() {\n if (!ES.TypeIsObject(this)) {\n throw new TypeError('Method called on incompatible type: must be an object.');\n }\n var result = '';\n if (this.global) {\n result += 'g';\n }\n if (this.ignoreCase) {\n result += 'i';\n }\n if (this.multiline) {\n result += 'm';\n }\n if (this.unicode) {\n result += 'u';\n }\n if (this.sticky) {\n result += 'y';\n }\n return result;\n };\n\n Value.getter(RegExp.prototype, 'flags', regExpFlagsGetter);\n }\n\n var regExpSupportsFlagsWithRegex = supportsDescriptors && valueOrFalseIfThrows(function () {\n return String(new RegExp(/a/g, 'i')) === '/a/i';\n });\n var regExpNeedsToSupportSymbolMatch = hasSymbols && supportsDescriptors && (function () {\n // Edge 0.12 supports flags fully, but does not support Symbol.match\n var regex = /./;\n regex[Symbol.match] = false;\n return RegExp(regex) === regex;\n }());\n\n var regexToStringIsGeneric = valueOrFalseIfThrows(function () {\n return RegExp.prototype.toString.call({ source: 'abc' }) === '/abc/';\n });\n var regexToStringSupportsGenericFlags = regexToStringIsGeneric && valueOrFalseIfThrows(function () {\n return RegExp.prototype.toString.call({ source: 'a', flags: 'b' }) === '/a/b';\n });\n if (!regexToStringIsGeneric || !regexToStringSupportsGenericFlags) {\n var origRegExpToString = RegExp.prototype.toString;\n defineProperty(RegExp.prototype, 'toString', function toString() {\n var R = ES.RequireObjectCoercible(this);\n if (Type.regex(R)) {\n return _call(origRegExpToString, R);\n }\n var pattern = $String(R.source);\n var flags = $String(R.flags);\n return '/' + pattern + '/' + flags;\n }, true);\n Value.preserveToString(RegExp.prototype.toString, origRegExpToString);\n }\n\n if (supportsDescriptors && (!regExpSupportsFlagsWithRegex || regExpNeedsToSupportSymbolMatch)) {\n var flagsGetter = Object.getOwnPropertyDescriptor(RegExp.prototype, 'flags').get;\n var sourceDesc = Object.getOwnPropertyDescriptor(RegExp.prototype, 'source') || {};\n var legacySourceGetter = function () {\n // prior to it being a getter, it's own + nonconfigurable\n return this.source;\n };\n var sourceGetter = ES.IsCallable(sourceDesc.get) ? sourceDesc.get : legacySourceGetter;\n\n var OrigRegExp = RegExp;\n var RegExpShim = (function () {\n return function RegExp(pattern, flags) {\n var patternIsRegExp = ES.IsRegExp(pattern);\n var calledWithNew = this instanceof RegExp;\n if (!calledWithNew && patternIsRegExp && typeof flags === 'undefined' && pattern.constructor === RegExp) {\n return pattern;\n }\n\n var P = pattern;\n var F = flags;\n if (Type.regex(pattern)) {\n P = ES.Call(sourceGetter, pattern);\n F = typeof flags === 'undefined' ? ES.Call(flagsGetter, pattern) : flags;\n return new RegExp(P, F);\n } else if (patternIsRegExp) {\n P = pattern.source;\n F = typeof flags === 'undefined' ? pattern.flags : flags;\n }\n return new OrigRegExp(pattern, flags);\n };\n }());\n wrapConstructor(OrigRegExp, RegExpShim, {\n $input: true // Chrome < v39 & Opera < 26 have a nonstandard \"$input\" property\n });\n /* globals RegExp: true */\n /* eslint-disable no-undef, no-global-assign */\n /* jshint -W020 */\n RegExp = RegExpShim;\n Value.redefine(globals, 'RegExp', RegExpShim);\n /* jshint +W020 */\n /* eslint-enable no-undef, no-global-assign */\n /* globals RegExp: false */\n }\n\n if (supportsDescriptors) {\n var regexGlobals = {\n input: '$_',\n lastMatch: '$&',\n lastParen: '$+',\n leftContext: '$`',\n rightContext: '$\\''\n };\n _forEach(keys(regexGlobals), function (prop) {\n if (prop in RegExp && !(regexGlobals[prop] in RegExp)) {\n Value.getter(RegExp, regexGlobals[prop], function get() {\n return RegExp[prop];\n });\n }\n });\n }\n addDefaultSpecies(RegExp);\n\n var inverseEpsilon = 1 / Number.EPSILON;\n var roundTiesToEven = function roundTiesToEven(n) {\n // Even though this reduces down to `return n`, it takes advantage of built-in rounding.\n return (n + inverseEpsilon) - inverseEpsilon;\n };\n var BINARY_32_EPSILON = Math.pow(2, -23);\n var BINARY_32_MAX_VALUE = Math.pow(2, 127) * (2 - BINARY_32_EPSILON);\n var BINARY_32_MIN_VALUE = Math.pow(2, -126);\n var E = Math.E;\n var LOG2E = Math.LOG2E;\n var LOG10E = Math.LOG10E;\n var numberCLZ = Number.prototype.clz;\n delete Number.prototype.clz; // Safari 8 has Number#clz\n\n var MathShims = {\n acosh: function acosh(value) {\n var x = Number(value);\n if (numberIsNaN(x) || value < 1) { return NaN; }\n if (x === 1) { return 0; }\n if (x === Infinity) { return x; }\n\n var xInvSquared = 1 / (x * x);\n if (x < 2) {\n return _log1p(x - 1 + (_sqrt(1 - xInvSquared) * x));\n }\n var halfX = x / 2;\n return _log1p(halfX + (_sqrt(1 - xInvSquared) * halfX) - 1) + (1 / LOG2E);\n },\n\n asinh: function asinh(value) {\n var x = Number(value);\n if (x === 0 || !globalIsFinite(x)) {\n return x;\n }\n\n var a = _abs(x);\n var aSquared = a * a;\n var s = _sign(x);\n if (a < 1) {\n return s * _log1p(a + (aSquared / (_sqrt(aSquared + 1) + 1)));\n }\n return s * (_log1p((a / 2) + (_sqrt(1 + (1 / aSquared)) * a / 2) - 1) + (1 / LOG2E));\n },\n\n atanh: function atanh(value) {\n var x = Number(value);\n\n if (x === 0) { return x; }\n if (x === -1) { return -Infinity; }\n if (x === 1) { return Infinity; }\n if (numberIsNaN(x) || x < -1 || x > 1) {\n return NaN;\n }\n\n var a = _abs(x);\n return _sign(x) * _log1p(2 * a / (1 - a)) / 2;\n },\n\n cbrt: function cbrt(value) {\n var x = Number(value);\n if (x === 0) { return x; }\n var negate = x < 0;\n var result;\n if (negate) { x = -x; }\n if (x === Infinity) {\n result = Infinity;\n } else {\n result = _exp(_log(x) / 3);\n // from http://en.wikipedia.org/wiki/Cube_root#Numerical_methods\n result = ((x / (result * result)) + (2 * result)) / 3;\n }\n return negate ? -result : result;\n },\n\n clz32: function clz32(value) {\n // See https://bugs.ecmascript.org/show_bug.cgi?id=2465\n var x = Number(value);\n var number = ES.ToUint32(x);\n if (number === 0) {\n return 32;\n }\n return numberCLZ ? ES.Call(numberCLZ, number) : 31 - _floor(_log(number + 0.5) * LOG2E);\n },\n\n cosh: function cosh(value) {\n var x = Number(value);\n if (x === 0) { return 1; } // +0 or -0\n if (numberIsNaN(x)) { return NaN; }\n if (!globalIsFinite(x)) { return Infinity; }\n\n var t = _exp(_abs(x) - 1);\n return (t + (1 / (t * E * E))) * (E / 2);\n },\n\n expm1: function expm1(value) {\n var x = Number(value);\n if (x === -Infinity) { return -1; }\n if (!globalIsFinite(x) || x === 0) { return x; }\n if (_abs(x) > 0.5) {\n return _exp(x) - 1;\n }\n // A more precise approximation using Taylor series expansion\n // from https://github.com/paulmillr/es6-shim/issues/314#issuecomment-70293986\n var t = x;\n var sum = 0;\n var n = 1;\n while (sum + t !== sum) {\n sum += t;\n n += 1;\n t *= x / n;\n }\n return sum;\n },\n\n hypot: function hypot(x, y) {\n var result = 0;\n var largest = 0;\n for (var i = 0; i < arguments.length; ++i) {\n var value = _abs(Number(arguments[i]));\n if (largest < value) {\n result *= (largest / value) * (largest / value);\n result += 1;\n largest = value;\n } else {\n result += value > 0 ? (value / largest) * (value / largest) : value;\n }\n }\n return largest === Infinity ? Infinity : largest * _sqrt(result);\n },\n\n log2: function log2(value) {\n return _log(value) * LOG2E;\n },\n\n log10: function log10(value) {\n return _log(value) * LOG10E;\n },\n\n log1p: _log1p,\n\n sign: _sign,\n\n sinh: function sinh(value) {\n var x = Number(value);\n if (!globalIsFinite(x) || x === 0) { return x; }\n\n var a = _abs(x);\n if (a < 1) {\n var u = Math.expm1(a);\n return _sign(x) * u * (1 + (1 / (u + 1))) / 2;\n }\n var t = _exp(a - 1);\n return _sign(x) * (t - (1 / (t * E * E))) * (E / 2);\n },\n\n tanh: function tanh(value) {\n var x = Number(value);\n if (numberIsNaN(x) || x === 0) { return x; }\n // can exit early at +-20 as JS loses precision for true value at this integer\n if (x >= 20) { return 1; }\n if (x <= -20) { return -1; }\n\n return (Math.expm1(x) - Math.expm1(-x)) / (_exp(x) + _exp(-x));\n },\n\n trunc: function trunc(value) {\n var x = Number(value);\n return x < 0 ? -_floor(-x) : _floor(x);\n },\n\n imul: function imul(x, y) {\n // taken from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul\n var a = ES.ToUint32(x);\n var b = ES.ToUint32(y);\n var ah = (a >>> 16) & 0xffff;\n var al = a & 0xffff;\n var bh = (b >>> 16) & 0xffff;\n var bl = b & 0xffff;\n // the shift by 0 fixes the sign on the high part\n // the final |0 converts the unsigned value into a signed value\n return (al * bl) + ((((ah * bl) + (al * bh)) << 16) >>> 0) | 0;\n },\n\n fround: function fround(x) {\n var v = Number(x);\n if (v === 0 || v === Infinity || v === -Infinity || numberIsNaN(v)) {\n return v;\n }\n var sign = _sign(v);\n var abs = _abs(v);\n if (abs < BINARY_32_MIN_VALUE) {\n return sign * roundTiesToEven(abs / BINARY_32_MIN_VALUE / BINARY_32_EPSILON) * BINARY_32_MIN_VALUE * BINARY_32_EPSILON;\n }\n // Veltkamp's splitting (?)\n var a = (1 + (BINARY_32_EPSILON / Number.EPSILON)) * abs;\n var result = a - (a - abs);\n if (result > BINARY_32_MAX_VALUE || numberIsNaN(result)) {\n return sign * Infinity;\n }\n return sign * result;\n }\n };\n\n var withinULPDistance = function withinULPDistance(result, expected, distance) {\n return _abs(1 - (result / expected)) / Number.EPSILON < (distance || 8);\n };\n\n defineProperties(Math, MathShims);\n // Chrome < 40 sinh returns ∞ for large numbers\n defineProperty(Math, 'sinh', MathShims.sinh, Math.sinh(710) === Infinity);\n // Chrome < 40 cosh returns ∞ for large numbers\n defineProperty(Math, 'cosh', MathShims.cosh, Math.cosh(710) === Infinity);\n // IE 11 TP has an imprecise log1p: reports Math.log1p(-1e-17) as 0\n defineProperty(Math, 'log1p', MathShims.log1p, Math.log1p(-1e-17) !== -1e-17);\n // IE 11 TP has an imprecise asinh: reports Math.asinh(-1e7) as not exactly equal to -Math.asinh(1e7)\n defineProperty(Math, 'asinh', MathShims.asinh, Math.asinh(-1e7) !== -Math.asinh(1e7));\n // Chrome < 54 asinh returns ∞ for large numbers and should not\n defineProperty(Math, 'asinh', MathShims.asinh, Math.asinh(1e+300) === Infinity);\n // Chrome < 54 atanh incorrectly returns 0 for large numbers\n defineProperty(Math, 'atanh', MathShims.atanh, Math.atanh(1e-300) === 0);\n // Chrome 40 has an imprecise Math.tanh with very small numbers\n defineProperty(Math, 'tanh', MathShims.tanh, Math.tanh(-2e-17) !== -2e-17);\n // Chrome 40 loses Math.acosh precision with high numbers\n defineProperty(Math, 'acosh', MathShims.acosh, Math.acosh(Number.MAX_VALUE) === Infinity);\n // Chrome < 54 has an inaccurate acosh for EPSILON deltas\n defineProperty(Math, 'acosh', MathShims.acosh, !withinULPDistance(Math.acosh(1 + Number.EPSILON), Math.sqrt(2 * Number.EPSILON)));\n // Firefox 38 on Windows\n defineProperty(Math, 'cbrt', MathShims.cbrt, !withinULPDistance(Math.cbrt(1e-300), 1e-100));\n // node 0.11 has an imprecise Math.sinh with very small numbers\n defineProperty(Math, 'sinh', MathShims.sinh, Math.sinh(-2e-17) !== -2e-17);\n // FF 35 on Linux reports 22025.465794806725 for Math.expm1(10)\n var expm1OfTen = Math.expm1(10);\n defineProperty(Math, 'expm1', MathShims.expm1, expm1OfTen > 22025.465794806719 || expm1OfTen < 22025.4657948067165168);\n\n var origMathRound = Math.round;\n // breaks in e.g. Safari 8, Internet Explorer 11, Opera 12\n var roundHandlesBoundaryConditions = Math.round(0.5 - (Number.EPSILON / 4)) === 0 &&\n Math.round(-0.5 + (Number.EPSILON / 3.99)) === 1;\n\n // When engines use Math.floor(x + 0.5) internally, Math.round can be buggy for large integers.\n // This behavior should be governed by \"round to nearest, ties to even mode\"\n // see http://www.ecma-international.org/ecma-262/6.0/#sec-terms-and-definitions-number-type\n // These are the boundary cases where it breaks.\n var smallestPositiveNumberWhereRoundBreaks = inverseEpsilon + 1;\n var largestPositiveNumberWhereRoundBreaks = (2 * inverseEpsilon) - 1;\n var roundDoesNotIncreaseIntegers = [\n smallestPositiveNumberWhereRoundBreaks,\n largestPositiveNumberWhereRoundBreaks\n ].every(function (num) {\n return Math.round(num) === num;\n });\n defineProperty(Math, 'round', function round(x) {\n var floor = _floor(x);\n var ceil = floor === -1 ? -0 : floor + 1;\n return x - floor < 0.5 ? floor : ceil;\n }, !roundHandlesBoundaryConditions || !roundDoesNotIncreaseIntegers);\n Value.preserveToString(Math.round, origMathRound);\n\n var origImul = Math.imul;\n if (Math.imul(0xffffffff, 5) !== -5) {\n // Safari 6.1, at least, reports \"0\" for this value\n Math.imul = MathShims.imul;\n Value.preserveToString(Math.imul, origImul);\n }\n if (Math.imul.length !== 2) {\n // Safari 8.0.4 has a length of 1\n // fixed in https://bugs.webkit.org/show_bug.cgi?id=143658\n overrideNative(Math, 'imul', function imul(x, y) {\n return ES.Call(origImul, Math, arguments);\n });\n }\n\n // Promises\n // Simplest possible implementation; use a 3rd-party library if you\n // want the best possible speed and/or long stack traces.\n var PromiseShim = (function () {\n var setTimeout = globals.setTimeout;\n // some environments don't have setTimeout - no way to shim here.\n if (typeof setTimeout !== 'function' && typeof setTimeout !== 'object') { return; }\n\n ES.IsPromise = function (promise) {\n if (!ES.TypeIsObject(promise)) {\n return false;\n }\n if (typeof promise._promise === 'undefined') {\n return false; // uninitialized, or missing our hidden field.\n }\n return true;\n };\n\n // \"PromiseCapability\" in the spec is what most promise implementations\n // call a \"deferred\".\n var PromiseCapability = function (C) {\n if (!ES.IsConstructor(C)) {\n throw new TypeError('Bad promise constructor');\n }\n var capability = this;\n var resolver = function (resolve, reject) {\n if (capability.resolve !== void 0 || capability.reject !== void 0) {\n throw new TypeError('Bad Promise implementation!');\n }\n capability.resolve = resolve;\n capability.reject = reject;\n };\n // Initialize fields to inform optimizers about the object shape.\n capability.resolve = void 0;\n capability.reject = void 0;\n capability.promise = new C(resolver);\n if (!(ES.IsCallable(capability.resolve) && ES.IsCallable(capability.reject))) {\n throw new TypeError('Bad promise constructor');\n }\n };\n\n // find an appropriate setImmediate-alike\n var makeZeroTimeout;\n /*global window */\n if (typeof window !== 'undefined' && ES.IsCallable(window.postMessage)) {\n makeZeroTimeout = function () {\n // from http://dbaron.org/log/20100309-faster-timeouts\n var timeouts = [];\n var messageName = 'zero-timeout-message';\n var setZeroTimeout = function (fn) {\n _push(timeouts, fn);\n window.postMessage(messageName, '*');\n };\n var handleMessage = function (event) {\n if (event.source === window && event.data === messageName) {\n event.stopPropagation();\n if (timeouts.length === 0) { return; }\n var fn = _shift(timeouts);\n fn();\n }\n };\n window.addEventListener('message', handleMessage, true);\n return setZeroTimeout;\n };\n }\n var makePromiseAsap = function () {\n // An efficient task-scheduler based on a pre-existing Promise\n // implementation, which we can use even if we override the\n // global Promise below (in order to workaround bugs)\n // https://github.com/Raynos/observ-hash/issues/2#issuecomment-35857671\n var P = globals.Promise;\n var pr = P && P.resolve && P.resolve();\n return pr && function (task) {\n return pr.then(task);\n };\n };\n /*global process */\n /* jscs:disable disallowMultiLineTernary */\n var enqueue = ES.IsCallable(globals.setImmediate) ?\n globals.setImmediate :\n typeof process === 'object' && process.nextTick ? process.nextTick : makePromiseAsap() ||\n (ES.IsCallable(makeZeroTimeout) ? makeZeroTimeout() : function (task) { setTimeout(task, 0); }); // fallback\n /* jscs:enable disallowMultiLineTernary */\n\n // Constants for Promise implementation\n var PROMISE_IDENTITY = function (x) { return x; };\n var PROMISE_THROWER = function (e) { throw e; };\n var PROMISE_PENDING = 0;\n var PROMISE_FULFILLED = 1;\n var PROMISE_REJECTED = 2;\n // We store fulfill/reject handlers and capabilities in a single array.\n var PROMISE_FULFILL_OFFSET = 0;\n var PROMISE_REJECT_OFFSET = 1;\n var PROMISE_CAPABILITY_OFFSET = 2;\n // This is used in an optimization for chaining promises via then.\n var PROMISE_FAKE_CAPABILITY = {};\n\n var enqueuePromiseReactionJob = function (handler, capability, argument) {\n enqueue(function () {\n promiseReactionJob(handler, capability, argument);\n });\n };\n\n var promiseReactionJob = function (handler, promiseCapability, argument) {\n var handlerResult, f;\n if (promiseCapability === PROMISE_FAKE_CAPABILITY) {\n // Fast case, when we don't actually need to chain through to a\n // (real) promiseCapability.\n return handler(argument);\n }\n try {\n handlerResult = handler(argument);\n f = promiseCapability.resolve;\n } catch (e) {\n handlerResult = e;\n f = promiseCapability.reject;\n }\n f(handlerResult);\n };\n\n var fulfillPromise = function (promise, value) {\n var _promise = promise._promise;\n var length = _promise.reactionLength;\n if (length > 0) {\n enqueuePromiseReactionJob(\n _promise.fulfillReactionHandler0,\n _promise.reactionCapability0,\n value\n );\n _promise.fulfillReactionHandler0 = void 0;\n _promise.rejectReactions0 = void 0;\n _promise.reactionCapability0 = void 0;\n if (length > 1) {\n for (var i = 1, idx = 0; i < length; i++, idx += 3) {\n enqueuePromiseReactionJob(\n _promise[idx + PROMISE_FULFILL_OFFSET],\n _promise[idx + PROMISE_CAPABILITY_OFFSET],\n value\n );\n promise[idx + PROMISE_FULFILL_OFFSET] = void 0;\n promise[idx + PROMISE_REJECT_OFFSET] = void 0;\n promise[idx + PROMISE_CAPABILITY_OFFSET] = void 0;\n }\n }\n }\n _promise.result = value;\n _promise.state = PROMISE_FULFILLED;\n _promise.reactionLength = 0;\n };\n\n var rejectPromise = function (promise, reason) {\n var _promise = promise._promise;\n var length = _promise.reactionLength;\n if (length > 0) {\n enqueuePromiseReactionJob(\n _promise.rejectReactionHandler0,\n _promise.reactionCapability0,\n reason\n );\n _promise.fulfillReactionHandler0 = void 0;\n _promise.rejectReactions0 = void 0;\n _promise.reactionCapability0 = void 0;\n if (length > 1) {\n for (var i = 1, idx = 0; i < length; i++, idx += 3) {\n enqueuePromiseReactionJob(\n _promise[idx + PROMISE_REJECT_OFFSET],\n _promise[idx + PROMISE_CAPABILITY_OFFSET],\n reason\n );\n promise[idx + PROMISE_FULFILL_OFFSET] = void 0;\n promise[idx + PROMISE_REJECT_OFFSET] = void 0;\n promise[idx + PROMISE_CAPABILITY_OFFSET] = void 0;\n }\n }\n }\n _promise.result = reason;\n _promise.state = PROMISE_REJECTED;\n _promise.reactionLength = 0;\n };\n\n var createResolvingFunctions = function (promise) {\n var alreadyResolved = false;\n var resolve = function (resolution) {\n var then;\n if (alreadyResolved) { return; }\n alreadyResolved = true;\n if (resolution === promise) {\n return rejectPromise(promise, new TypeError('Self resolution'));\n }\n if (!ES.TypeIsObject(resolution)) {\n return fulfillPromise(promise, resolution);\n }\n try {\n then = resolution.then;\n } catch (e) {\n return rejectPromise(promise, e);\n }\n if (!ES.IsCallable(then)) {\n return fulfillPromise(promise, resolution);\n }\n enqueue(function () {\n promiseResolveThenableJob(promise, resolution, then);\n });\n };\n var reject = function (reason) {\n if (alreadyResolved) { return; }\n alreadyResolved = true;\n return rejectPromise(promise, reason);\n };\n return { resolve: resolve, reject: reject };\n };\n\n var optimizedThen = function (then, thenable, resolve, reject) {\n // Optimization: since we discard the result, we can pass our\n // own then implementation a special hint to let it know it\n // doesn't have to create it. (The PROMISE_FAKE_CAPABILITY\n // object is local to this implementation and unforgeable outside.)\n if (then === Promise$prototype$then) {\n _call(then, thenable, resolve, reject, PROMISE_FAKE_CAPABILITY);\n } else {\n _call(then, thenable, resolve, reject);\n }\n };\n var promiseResolveThenableJob = function (promise, thenable, then) {\n var resolvingFunctions = createResolvingFunctions(promise);\n var resolve = resolvingFunctions.resolve;\n var reject = resolvingFunctions.reject;\n try {\n optimizedThen(then, thenable, resolve, reject);\n } catch (e) {\n reject(e);\n }\n };\n\n var Promise$prototype, Promise$prototype$then;\n var Promise = (function () {\n var PromiseShim = function Promise(resolver) {\n if (!(this instanceof PromiseShim)) {\n throw new TypeError('Constructor Promise requires \"new\"');\n }\n if (this && this._promise) {\n throw new TypeError('Bad construction');\n }\n // see https://bugs.ecmascript.org/show_bug.cgi?id=2482\n if (!ES.IsCallable(resolver)) {\n throw new TypeError('not a valid resolver');\n }\n var promise = emulateES6construct(this, PromiseShim, Promise$prototype, {\n _promise: {\n result: void 0,\n state: PROMISE_PENDING,\n // The first member of the \"reactions\" array is inlined here,\n // since most promises only have one reaction.\n // We've also exploded the 'reaction' object to inline the\n // \"handler\" and \"capability\" fields, since both fulfill and\n // reject reactions share the same capability.\n reactionLength: 0,\n fulfillReactionHandler0: void 0,\n rejectReactionHandler0: void 0,\n reactionCapability0: void 0\n }\n });\n var resolvingFunctions = createResolvingFunctions(promise);\n var reject = resolvingFunctions.reject;\n try {\n resolver(resolvingFunctions.resolve, reject);\n } catch (e) {\n reject(e);\n }\n return promise;\n };\n return PromiseShim;\n }());\n Promise$prototype = Promise.prototype;\n\n var _promiseAllResolver = function (index, values, capability, remaining) {\n var alreadyCalled = false;\n return function (x) {\n if (alreadyCalled) { return; }\n alreadyCalled = true;\n values[index] = x;\n if ((--remaining.count) === 0) {\n var resolve = capability.resolve;\n resolve(values); // call w/ this===undefined\n }\n };\n };\n\n var performPromiseAll = function (iteratorRecord, C, resultCapability) {\n var it = iteratorRecord.iterator;\n var values = [];\n var remaining = { count: 1 };\n var next, nextValue;\n var index = 0;\n while (true) {\n try {\n next = ES.IteratorStep(it);\n if (next === false) {\n iteratorRecord.done = true;\n break;\n }\n nextValue = next.value;\n } catch (e) {\n iteratorRecord.done = true;\n throw e;\n }\n values[index] = void 0;\n var nextPromise = C.resolve(nextValue);\n var resolveElement = _promiseAllResolver(\n index,\n values,\n resultCapability,\n remaining\n );\n remaining.count += 1;\n optimizedThen(nextPromise.then, nextPromise, resolveElement, resultCapability.reject);\n index += 1;\n }\n if ((--remaining.count) === 0) {\n var resolve = resultCapability.resolve;\n resolve(values); // call w/ this===undefined\n }\n return resultCapability.promise;\n };\n\n var performPromiseRace = function (iteratorRecord, C, resultCapability) {\n var it = iteratorRecord.iterator;\n var next, nextValue, nextPromise;\n while (true) {\n try {\n next = ES.IteratorStep(it);\n if (next === false) {\n // NOTE: If iterable has no items, resulting promise will never\n // resolve; see:\n // https://github.com/domenic/promises-unwrapping/issues/75\n // https://bugs.ecmascript.org/show_bug.cgi?id=2515\n iteratorRecord.done = true;\n break;\n }\n nextValue = next.value;\n } catch (e) {\n iteratorRecord.done = true;\n throw e;\n }\n nextPromise = C.resolve(nextValue);\n optimizedThen(nextPromise.then, nextPromise, resultCapability.resolve, resultCapability.reject);\n }\n return resultCapability.promise;\n };\n\n defineProperties(Promise, {\n all: function all(iterable) {\n var C = this;\n if (!ES.TypeIsObject(C)) {\n throw new TypeError('Promise is not object');\n }\n var capability = new PromiseCapability(C);\n var iterator, iteratorRecord;\n try {\n iterator = ES.GetIterator(iterable);\n iteratorRecord = { iterator: iterator, done: false };\n return performPromiseAll(iteratorRecord, C, capability);\n } catch (e) {\n var exception = e;\n if (iteratorRecord && !iteratorRecord.done) {\n try {\n ES.IteratorClose(iterator, true);\n } catch (ee) {\n exception = ee;\n }\n }\n var reject = capability.reject;\n reject(exception);\n return capability.promise;\n }\n },\n\n race: function race(iterable) {\n var C = this;\n if (!ES.TypeIsObject(C)) {\n throw new TypeError('Promise is not object');\n }\n var capability = new PromiseCapability(C);\n var iterator, iteratorRecord;\n try {\n iterator = ES.GetIterator(iterable);\n iteratorRecord = { iterator: iterator, done: false };\n return performPromiseRace(iteratorRecord, C, capability);\n } catch (e) {\n var exception = e;\n if (iteratorRecord && !iteratorRecord.done) {\n try {\n ES.IteratorClose(iterator, true);\n } catch (ee) {\n exception = ee;\n }\n }\n var reject = capability.reject;\n reject(exception);\n return capability.promise;\n }\n },\n\n reject: function reject(reason) {\n var C = this;\n if (!ES.TypeIsObject(C)) {\n throw new TypeError('Bad promise constructor');\n }\n var capability = new PromiseCapability(C);\n var rejectFunc = capability.reject;\n rejectFunc(reason); // call with this===undefined\n return capability.promise;\n },\n\n resolve: function resolve(v) {\n // See https://esdiscuss.org/topic/fixing-promise-resolve for spec\n var C = this;\n if (!ES.TypeIsObject(C)) {\n throw new TypeError('Bad promise constructor');\n }\n if (ES.IsPromise(v)) {\n var constructor = v.constructor;\n if (constructor === C) {\n return v;\n }\n }\n var capability = new PromiseCapability(C);\n var resolveFunc = capability.resolve;\n resolveFunc(v); // call with this===undefined\n return capability.promise;\n }\n });\n\n defineProperties(Promise$prototype, {\n 'catch': function (onRejected) {\n return this.then(null, onRejected);\n },\n\n then: function then(onFulfilled, onRejected) {\n var promise = this;\n if (!ES.IsPromise(promise)) { throw new TypeError('not a promise'); }\n var C = ES.SpeciesConstructor(promise, Promise);\n var resultCapability;\n var returnValueIsIgnored = arguments.length > 2 && arguments[2] === PROMISE_FAKE_CAPABILITY;\n if (returnValueIsIgnored && C === Promise) {\n resultCapability = PROMISE_FAKE_CAPABILITY;\n } else {\n resultCapability = new PromiseCapability(C);\n }\n // PerformPromiseThen(promise, onFulfilled, onRejected, resultCapability)\n // Note that we've split the 'reaction' object into its two\n // components, \"capabilities\" and \"handler\"\n // \"capabilities\" is always equal to `resultCapability`\n var fulfillReactionHandler = ES.IsCallable(onFulfilled) ? onFulfilled : PROMISE_IDENTITY;\n var rejectReactionHandler = ES.IsCallable(onRejected) ? onRejected : PROMISE_THROWER;\n var _promise = promise._promise;\n var value;\n if (_promise.state === PROMISE_PENDING) {\n if (_promise.reactionLength === 0) {\n _promise.fulfillReactionHandler0 = fulfillReactionHandler;\n _promise.rejectReactionHandler0 = rejectReactionHandler;\n _promise.reactionCapability0 = resultCapability;\n } else {\n var idx = 3 * (_promise.reactionLength - 1);\n _promise[idx + PROMISE_FULFILL_OFFSET] = fulfillReactionHandler;\n _promise[idx + PROMISE_REJECT_OFFSET] = rejectReactionHandler;\n _promise[idx + PROMISE_CAPABILITY_OFFSET] = resultCapability;\n }\n _promise.reactionLength += 1;\n } else if (_promise.state === PROMISE_FULFILLED) {\n value = _promise.result;\n enqueuePromiseReactionJob(\n fulfillReactionHandler,\n resultCapability,\n value\n );\n } else if (_promise.state === PROMISE_REJECTED) {\n value = _promise.result;\n enqueuePromiseReactionJob(\n rejectReactionHandler,\n resultCapability,\n value\n );\n } else {\n throw new TypeError('unexpected Promise state');\n }\n return resultCapability.promise;\n }\n });\n // This helps the optimizer by ensuring that methods which take\n // capabilities aren't polymorphic.\n PROMISE_FAKE_CAPABILITY = new PromiseCapability(Promise);\n Promise$prototype$then = Promise$prototype.then;\n\n return Promise;\n }());\n\n // Chrome's native Promise has extra methods that it shouldn't have. Let's remove them.\n if (globals.Promise) {\n delete globals.Promise.accept;\n delete globals.Promise.defer;\n delete globals.Promise.prototype.chain;\n }\n\n if (typeof PromiseShim === 'function') {\n // export the Promise constructor.\n defineProperties(globals, { Promise: PromiseShim });\n // In Chrome 33 (and thereabouts) Promise is defined, but the\n // implementation is buggy in a number of ways. Let's check subclassing\n // support to see if we have a buggy implementation.\n var promiseSupportsSubclassing = supportsSubclassing(globals.Promise, function (S) {\n return S.resolve(42).then(function () {}) instanceof S;\n });\n var promiseIgnoresNonFunctionThenCallbacks = !throwsError(function () {\n return globals.Promise.reject(42).then(null, 5).then(null, noop);\n });\n var promiseRequiresObjectContext = throwsError(function () { return globals.Promise.call(3, noop); });\n // Promise.resolve() was errata'ed late in the ES6 process.\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1170742\n // https://code.google.com/p/v8/issues/detail?id=4161\n // It serves as a proxy for a number of other bugs in early Promise\n // implementations.\n var promiseResolveBroken = (function (Promise) {\n var p = Promise.resolve(5);\n p.constructor = {};\n var p2 = Promise.resolve(p);\n try {\n p2.then(null, noop).then(null, noop); // avoid \"uncaught rejection\" warnings in console\n } catch (e) {\n return true; // v8 native Promises break here https://code.google.com/p/chromium/issues/detail?id=575314\n }\n return p === p2; // This *should* be false!\n }(globals.Promise));\n\n // Chrome 46 (probably older too) does not retrieve a thenable's .then synchronously\n var getsThenSynchronously = supportsDescriptors && (function () {\n var count = 0;\n // eslint-disable-next-line getter-return\n var thenable = Object.defineProperty({}, 'then', { get: function () { count += 1; } });\n Promise.resolve(thenable);\n return count === 1;\n }());\n\n var BadResolverPromise = function BadResolverPromise(executor) {\n var p = new Promise(executor);\n executor(3, function () {});\n this.then = p.then;\n this.constructor = BadResolverPromise;\n };\n BadResolverPromise.prototype = Promise.prototype;\n BadResolverPromise.all = Promise.all;\n // Chrome Canary 49 (probably older too) has some implementation bugs\n var hasBadResolverPromise = valueOrFalseIfThrows(function () {\n return !!BadResolverPromise.all([1, 2]);\n });\n\n if (!promiseSupportsSubclassing || !promiseIgnoresNonFunctionThenCallbacks ||\n !promiseRequiresObjectContext || promiseResolveBroken ||\n !getsThenSynchronously || hasBadResolverPromise) {\n /* globals Promise: true */\n /* eslint-disable no-undef, no-global-assign */\n /* jshint -W020 */\n Promise = PromiseShim;\n /* jshint +W020 */\n /* eslint-enable no-undef, no-global-assign */\n /* globals Promise: false */\n overrideNative(globals, 'Promise', PromiseShim);\n }\n if (Promise.all.length !== 1) {\n var origAll = Promise.all;\n overrideNative(Promise, 'all', function all(iterable) {\n return ES.Call(origAll, this, arguments);\n });\n }\n if (Promise.race.length !== 1) {\n var origRace = Promise.race;\n overrideNative(Promise, 'race', function race(iterable) {\n return ES.Call(origRace, this, arguments);\n });\n }\n if (Promise.resolve.length !== 1) {\n var origResolve = Promise.resolve;\n overrideNative(Promise, 'resolve', function resolve(x) {\n return ES.Call(origResolve, this, arguments);\n });\n }\n if (Promise.reject.length !== 1) {\n var origReject = Promise.reject;\n overrideNative(Promise, 'reject', function reject(r) {\n return ES.Call(origReject, this, arguments);\n });\n }\n ensureEnumerable(Promise, 'all');\n ensureEnumerable(Promise, 'race');\n ensureEnumerable(Promise, 'resolve');\n ensureEnumerable(Promise, 'reject');\n addDefaultSpecies(Promise);\n }\n\n // Map and Set require a true ES5 environment\n // Their fast path also requires that the environment preserve\n // property insertion order, which is not guaranteed by the spec.\n var testOrder = function (a) {\n var b = keys(_reduce(a, function (o, k) {\n o[k] = true;\n return o;\n }, {}));\n return a.join(':') === b.join(':');\n };\n var preservesInsertionOrder = testOrder(['z', 'a', 'bb']);\n // some engines (eg, Chrome) only preserve insertion order for string keys\n var preservesNumericInsertionOrder = testOrder(['z', 1, 'a', '3', 2]);\n\n if (supportsDescriptors) {\n\n var fastkey = function fastkey(key, skipInsertionOrderCheck) {\n if (!skipInsertionOrderCheck && !preservesInsertionOrder) {\n return null;\n }\n if (isNullOrUndefined(key)) {\n return '^' + ES.ToString(key);\n } else if (typeof key === 'string') {\n return '$' + key;\n } else if (typeof key === 'number') {\n // note that -0 will get coerced to \"0\" when used as a property key\n if (!preservesNumericInsertionOrder) {\n return 'n' + key;\n }\n return key;\n } else if (typeof key === 'boolean') {\n return 'b' + key;\n }\n return null;\n };\n\n var emptyObject = function emptyObject() {\n // accomodate some older not-quite-ES5 browsers\n return Object.create ? Object.create(null) : {};\n };\n\n var addIterableToMap = function addIterableToMap(MapConstructor, map, iterable) {\n if (isArray(iterable) || Type.string(iterable)) {\n _forEach(iterable, function (entry) {\n if (!ES.TypeIsObject(entry)) {\n throw new TypeError('Iterator value ' + entry + ' is not an entry object');\n }\n map.set(entry[0], entry[1]);\n });\n } else if (iterable instanceof MapConstructor) {\n _call(MapConstructor.prototype.forEach, iterable, function (value, key) {\n map.set(key, value);\n });\n } else {\n var iter, adder;\n if (!isNullOrUndefined(iterable)) {\n adder = map.set;\n if (!ES.IsCallable(adder)) { throw new TypeError('bad map'); }\n iter = ES.GetIterator(iterable);\n }\n if (typeof iter !== 'undefined') {\n while (true) {\n var next = ES.IteratorStep(iter);\n if (next === false) { break; }\n var nextItem = next.value;\n try {\n if (!ES.TypeIsObject(nextItem)) {\n throw new TypeError('Iterator value ' + nextItem + ' is not an entry object');\n }\n _call(adder, map, nextItem[0], nextItem[1]);\n } catch (e) {\n ES.IteratorClose(iter, true);\n throw e;\n }\n }\n }\n }\n };\n var addIterableToSet = function addIterableToSet(SetConstructor, set, iterable) {\n if (isArray(iterable) || Type.string(iterable)) {\n _forEach(iterable, function (value) {\n set.add(value);\n });\n } else if (iterable instanceof SetConstructor) {\n _call(SetConstructor.prototype.forEach, iterable, function (value) {\n set.add(value);\n });\n } else {\n var iter, adder;\n if (!isNullOrUndefined(iterable)) {\n adder = set.add;\n if (!ES.IsCallable(adder)) { throw new TypeError('bad set'); }\n iter = ES.GetIterator(iterable);\n }\n if (typeof iter !== 'undefined') {\n while (true) {\n var next = ES.IteratorStep(iter);\n if (next === false) { break; }\n var nextValue = next.value;\n try {\n _call(adder, set, nextValue);\n } catch (e) {\n ES.IteratorClose(iter, true);\n throw e;\n }\n }\n }\n }\n };\n\n var collectionShims = {\n Map: (function () {\n\n var empty = {};\n\n var MapEntry = function MapEntry(key, value) {\n this.key = key;\n this.value = value;\n this.next = null;\n this.prev = null;\n };\n\n MapEntry.prototype.isRemoved = function isRemoved() {\n return this.key === empty;\n };\n\n var isMap = function isMap(map) {\n return !!map._es6map;\n };\n\n var requireMapSlot = function requireMapSlot(map, method) {\n if (!ES.TypeIsObject(map) || !isMap(map)) {\n throw new TypeError('Method Map.prototype.' + method + ' called on incompatible receiver ' + ES.ToString(map));\n }\n };\n\n var MapIterator = function MapIterator(map, kind) {\n requireMapSlot(map, '[[MapIterator]]');\n this.head = map._head;\n this.i = this.head;\n this.kind = kind;\n };\n\n MapIterator.prototype = {\n isMapIterator: true,\n next: function next() {\n if (!this.isMapIterator) {\n throw new TypeError('Not a MapIterator');\n }\n var i = this.i;\n var kind = this.kind;\n var head = this.head;\n if (typeof this.i === 'undefined') {\n return iteratorResult();\n }\n while (i.isRemoved() && i !== head) {\n // back up off of removed entries\n i = i.prev;\n }\n // advance to next unreturned element.\n var result;\n while (i.next !== head) {\n i = i.next;\n if (!i.isRemoved()) {\n if (kind === 'key') {\n result = i.key;\n } else if (kind === 'value') {\n result = i.value;\n } else {\n result = [i.key, i.value];\n }\n this.i = i;\n return iteratorResult(result);\n }\n }\n // once the iterator is done, it is done forever.\n this.i = void 0;\n return iteratorResult();\n }\n };\n addIterator(MapIterator.prototype);\n\n var Map$prototype;\n var MapShim = function Map() {\n if (!(this instanceof Map)) {\n throw new TypeError('Constructor Map requires \"new\"');\n }\n if (this && this._es6map) {\n throw new TypeError('Bad construction');\n }\n var map = emulateES6construct(this, Map, Map$prototype, {\n _es6map: true,\n _head: null,\n _map: OrigMap ? new OrigMap() : null,\n _size: 0,\n _storage: emptyObject()\n });\n\n var head = new MapEntry(null, null);\n // circular doubly-linked list.\n /* eslint no-multi-assign: 1 */\n head.next = head.prev = head;\n map._head = head;\n\n // Optionally initialize map from iterable\n if (arguments.length > 0) {\n addIterableToMap(Map, map, arguments[0]);\n }\n return map;\n };\n Map$prototype = MapShim.prototype;\n\n Value.getter(Map$prototype, 'size', function () {\n if (typeof this._size === 'undefined') {\n throw new TypeError('size method called on incompatible Map');\n }\n return this._size;\n });\n\n defineProperties(Map$prototype, {\n get: function get(key) {\n requireMapSlot(this, 'get');\n var entry;\n var fkey = fastkey(key, true);\n if (fkey !== null) {\n // fast O(1) path\n entry = this._storage[fkey];\n if (entry) {\n return entry.value;\n } else {\n return;\n }\n }\n if (this._map) {\n // fast object key path\n entry = origMapGet.call(this._map, key);\n if (entry) {\n return entry.value;\n } else {\n return;\n }\n }\n var head = this._head;\n var i = head;\n while ((i = i.next) !== head) {\n if (ES.SameValueZero(i.key, key)) {\n return i.value;\n }\n }\n },\n\n has: function has(key) {\n requireMapSlot(this, 'has');\n var fkey = fastkey(key, true);\n if (fkey !== null) {\n // fast O(1) path\n return typeof this._storage[fkey] !== 'undefined';\n }\n if (this._map) {\n // fast object key path\n return origMapHas.call(this._map, key);\n }\n var head = this._head;\n var i = head;\n while ((i = i.next) !== head) {\n if (ES.SameValueZero(i.key, key)) {\n return true;\n }\n }\n return false;\n },\n\n set: function set(key, value) {\n requireMapSlot(this, 'set');\n var head = this._head;\n var i = head;\n var entry;\n var fkey = fastkey(key, true);\n if (fkey !== null) {\n // fast O(1) path\n if (typeof this._storage[fkey] !== 'undefined') {\n this._storage[fkey].value = value;\n return this;\n } else {\n entry = this._storage[fkey] = new MapEntry(key, value); /* eslint no-multi-assign: 1 */\n i = head.prev;\n // fall through\n }\n } else if (this._map) {\n // fast object key path\n if (origMapHas.call(this._map, key)) {\n origMapGet.call(this._map, key).value = value;\n } else {\n entry = new MapEntry(key, value);\n origMapSet.call(this._map, key, entry);\n i = head.prev;\n // fall through\n }\n }\n while ((i = i.next) !== head) {\n if (ES.SameValueZero(i.key, key)) {\n i.value = value;\n return this;\n }\n }\n entry = entry || new MapEntry(key, value);\n if (ES.SameValue(-0, key)) {\n entry.key = +0; // coerce -0 to +0 in entry\n }\n entry.next = this._head;\n entry.prev = this._head.prev;\n entry.prev.next = entry;\n entry.next.prev = entry;\n this._size += 1;\n return this;\n },\n\n 'delete': function (key) {\n requireMapSlot(this, 'delete');\n var head = this._head;\n var i = head;\n var fkey = fastkey(key, true);\n if (fkey !== null) {\n // fast O(1) path\n if (typeof this._storage[fkey] === 'undefined') {\n return false;\n }\n i = this._storage[fkey].prev;\n delete this._storage[fkey];\n // fall through\n } else if (this._map) {\n // fast object key path\n if (!origMapHas.call(this._map, key)) {\n return false;\n }\n i = origMapGet.call(this._map, key).prev;\n origMapDelete.call(this._map, key);\n // fall through\n }\n while ((i = i.next) !== head) {\n if (ES.SameValueZero(i.key, key)) {\n i.key = empty;\n i.value = empty;\n i.prev.next = i.next;\n i.next.prev = i.prev;\n this._size -= 1;\n return true;\n }\n }\n return false;\n },\n\n clear: function clear() {\n /* eslint no-multi-assign: 1 */\n requireMapSlot(this, 'clear');\n this._map = OrigMap ? new OrigMap() : null;\n this._size = 0;\n this._storage = emptyObject();\n var head = this._head;\n var i = head;\n var p = i.next;\n while ((i = p) !== head) {\n i.key = empty;\n i.value = empty;\n p = i.next;\n i.next = i.prev = head;\n }\n head.next = head.prev = head;\n },\n\n keys: function keys() {\n requireMapSlot(this, 'keys');\n return new MapIterator(this, 'key');\n },\n\n values: function values() {\n requireMapSlot(this, 'values');\n return new MapIterator(this, 'value');\n },\n\n entries: function entries() {\n requireMapSlot(this, 'entries');\n return new MapIterator(this, 'key+value');\n },\n\n forEach: function forEach(callback) {\n requireMapSlot(this, 'forEach');\n var context = arguments.length > 1 ? arguments[1] : null;\n var it = this.entries();\n for (var entry = it.next(); !entry.done; entry = it.next()) {\n if (context) {\n _call(callback, context, entry.value[1], entry.value[0], this);\n } else {\n callback(entry.value[1], entry.value[0], this);\n }\n }\n }\n });\n addIterator(Map$prototype, Map$prototype.entries);\n\n return MapShim;\n }()),\n\n Set: (function () {\n var isSet = function isSet(set) {\n return set._es6set && typeof set._storage !== 'undefined';\n };\n var requireSetSlot = function requireSetSlot(set, method) {\n if (!ES.TypeIsObject(set) || !isSet(set)) {\n // https://github.com/paulmillr/es6-shim/issues/176\n throw new TypeError('Set.prototype.' + method + ' called on incompatible receiver ' + ES.ToString(set));\n }\n };\n\n // Creating a Map is expensive. To speed up the common case of\n // Sets containing only string or numeric keys, we use an object\n // as backing storage and lazily create a full Map only when\n // required.\n var Set$prototype;\n var SetShim = function Set() {\n if (!(this instanceof Set)) {\n throw new TypeError('Constructor Set requires \"new\"');\n }\n if (this && this._es6set) {\n throw new TypeError('Bad construction');\n }\n var set = emulateES6construct(this, Set, Set$prototype, {\n _es6set: true,\n '[[SetData]]': null,\n _storage: emptyObject()\n });\n if (!set._es6set) {\n throw new TypeError('bad set');\n }\n\n // Optionally initialize Set from iterable\n if (arguments.length > 0) {\n addIterableToSet(Set, set, arguments[0]);\n }\n return set;\n };\n Set$prototype = SetShim.prototype;\n\n var decodeKey = function (key) {\n var k = key;\n if (k === '^null') {\n return null;\n } else if (k === '^undefined') {\n return void 0;\n } else {\n var first = k.charAt(0);\n if (first === '$') {\n return _strSlice(k, 1);\n } else if (first === 'n') {\n return +_strSlice(k, 1);\n } else if (first === 'b') {\n return k === 'btrue';\n }\n }\n return +k;\n };\n // Switch from the object backing storage to a full Map.\n var ensureMap = function ensureMap(set) {\n if (!set['[[SetData]]']) {\n var m = new collectionShims.Map();\n set['[[SetData]]'] = m;\n _forEach(keys(set._storage), function (key) {\n var k = decodeKey(key);\n m.set(k, k);\n });\n set['[[SetData]]'] = m;\n }\n set._storage = null; // free old backing storage\n };\n\n Value.getter(SetShim.prototype, 'size', function () {\n requireSetSlot(this, 'size');\n if (this._storage) {\n return keys(this._storage).length;\n }\n ensureMap(this);\n return this['[[SetData]]'].size;\n });\n\n defineProperties(SetShim.prototype, {\n has: function has(key) {\n requireSetSlot(this, 'has');\n var fkey;\n if (this._storage && (fkey = fastkey(key)) !== null) {\n return !!this._storage[fkey];\n }\n ensureMap(this);\n return this['[[SetData]]'].has(key);\n },\n\n add: function add(key) {\n requireSetSlot(this, 'add');\n var fkey;\n if (this._storage && (fkey = fastkey(key)) !== null) {\n this._storage[fkey] = true;\n return this;\n }\n ensureMap(this);\n this['[[SetData]]'].set(key, key);\n return this;\n },\n\n 'delete': function (key) {\n requireSetSlot(this, 'delete');\n var fkey;\n if (this._storage && (fkey = fastkey(key)) !== null) {\n var hasFKey = _hasOwnProperty(this._storage, fkey);\n return (delete this._storage[fkey]) && hasFKey;\n }\n ensureMap(this);\n return this['[[SetData]]']['delete'](key);\n },\n\n clear: function clear() {\n requireSetSlot(this, 'clear');\n if (this._storage) {\n this._storage = emptyObject();\n }\n if (this['[[SetData]]']) {\n this['[[SetData]]'].clear();\n }\n },\n\n values: function values() {\n requireSetSlot(this, 'values');\n ensureMap(this);\n return new SetIterator(this['[[SetData]]'].values());\n },\n\n entries: function entries() {\n requireSetSlot(this, 'entries');\n ensureMap(this);\n return new SetIterator(this['[[SetData]]'].entries());\n },\n\n forEach: function forEach(callback) {\n requireSetSlot(this, 'forEach');\n var context = arguments.length > 1 ? arguments[1] : null;\n var entireSet = this;\n ensureMap(entireSet);\n this['[[SetData]]'].forEach(function (value, key) {\n if (context) {\n _call(callback, context, key, key, entireSet);\n } else {\n callback(key, key, entireSet);\n }\n });\n }\n });\n defineProperty(SetShim.prototype, 'keys', SetShim.prototype.values, true);\n addIterator(SetShim.prototype, SetShim.prototype.values);\n\n var SetIterator = function SetIterator(it) {\n this.it = it;\n };\n SetIterator.prototype = {\n isSetIterator: true,\n next: function next() {\n if (!this.isSetIterator) {\n throw new TypeError('Not a SetIterator');\n }\n return this.it.next();\n }\n };\n addIterator(SetIterator.prototype);\n\n return SetShim;\n }())\n };\n\n var isGoogleTranslate = globals.Set && !Set.prototype['delete'] && Set.prototype.remove && Set.prototype.items && Set.prototype.map && Array.isArray(new Set().keys);\n if (isGoogleTranslate) {\n // special-case force removal of wildly invalid Set implementation in Google Translate iframes\n // see https://github.com/paulmillr/es6-shim/issues/438 / https://twitter.com/ljharb/status/849335573114363904\n globals.Set = collectionShims.Set;\n }\n if (globals.Map || globals.Set) {\n // Safari 8, for example, doesn't accept an iterable.\n var mapAcceptsArguments = valueOrFalseIfThrows(function () { return new Map([[1, 2]]).get(1) === 2; });\n if (!mapAcceptsArguments) {\n globals.Map = function Map() {\n if (!(this instanceof Map)) {\n throw new TypeError('Constructor Map requires \"new\"');\n }\n var m = new OrigMap();\n if (arguments.length > 0) {\n addIterableToMap(Map, m, arguments[0]);\n }\n delete m.constructor;\n Object.setPrototypeOf(m, globals.Map.prototype);\n return m;\n };\n globals.Map.prototype = create(OrigMap.prototype);\n defineProperty(globals.Map.prototype, 'constructor', globals.Map, true);\n Value.preserveToString(globals.Map, OrigMap);\n }\n var testMap = new Map();\n var mapUsesSameValueZero = (function () {\n // Chrome 38-42, node 0.11/0.12, iojs 1/2 also have a bug when the Map has a size > 4\n var m = new Map([[1, 0], [2, 0], [3, 0], [4, 0]]);\n m.set(-0, m);\n return m.get(0) === m && m.get(-0) === m && m.has(0) && m.has(-0);\n }());\n var mapSupportsChaining = testMap.set(1, 2) === testMap;\n if (!mapUsesSameValueZero || !mapSupportsChaining) {\n overrideNative(Map.prototype, 'set', function set(k, v) {\n _call(origMapSet, this, k === 0 ? 0 : k, v);\n return this;\n });\n }\n if (!mapUsesSameValueZero) {\n defineProperties(Map.prototype, {\n get: function get(k) {\n return _call(origMapGet, this, k === 0 ? 0 : k);\n },\n has: function has(k) {\n return _call(origMapHas, this, k === 0 ? 0 : k);\n }\n }, true);\n Value.preserveToString(Map.prototype.get, origMapGet);\n Value.preserveToString(Map.prototype.has, origMapHas);\n }\n var testSet = new Set();\n var setUsesSameValueZero = Set.prototype['delete'] && Set.prototype.add && Set.prototype.has && (function (s) {\n s['delete'](0);\n s.add(-0);\n return !s.has(0);\n }(testSet));\n var setSupportsChaining = testSet.add(1) === testSet;\n if (!setUsesSameValueZero || !setSupportsChaining) {\n var origSetAdd = Set.prototype.add;\n Set.prototype.add = function add(v) {\n _call(origSetAdd, this, v === 0 ? 0 : v);\n return this;\n };\n Value.preserveToString(Set.prototype.add, origSetAdd);\n }\n if (!setUsesSameValueZero) {\n var origSetHas = Set.prototype.has;\n Set.prototype.has = function has(v) {\n return _call(origSetHas, this, v === 0 ? 0 : v);\n };\n Value.preserveToString(Set.prototype.has, origSetHas);\n var origSetDel = Set.prototype['delete'];\n Set.prototype['delete'] = function SetDelete(v) {\n return _call(origSetDel, this, v === 0 ? 0 : v);\n };\n Value.preserveToString(Set.prototype['delete'], origSetDel);\n }\n var mapSupportsSubclassing = supportsSubclassing(globals.Map, function (M) {\n var m = new M([]);\n // Firefox 32 is ok with the instantiating the subclass but will\n // throw when the map is used.\n m.set(42, 42);\n return m instanceof M;\n });\n // without Object.setPrototypeOf, subclassing is not possible\n var mapFailsToSupportSubclassing = Object.setPrototypeOf && !mapSupportsSubclassing;\n var mapRequiresNew = (function () {\n try {\n return !(globals.Map() instanceof globals.Map);\n } catch (e) {\n return e instanceof TypeError;\n }\n }());\n if (globals.Map.length !== 0 || mapFailsToSupportSubclassing || !mapRequiresNew) {\n globals.Map = function Map() {\n if (!(this instanceof Map)) {\n throw new TypeError('Constructor Map requires \"new\"');\n }\n var m = new OrigMap();\n if (arguments.length > 0) {\n addIterableToMap(Map, m, arguments[0]);\n }\n delete m.constructor;\n Object.setPrototypeOf(m, Map.prototype);\n return m;\n };\n globals.Map.prototype = OrigMap.prototype;\n defineProperty(globals.Map.prototype, 'constructor', globals.Map, true);\n Value.preserveToString(globals.Map, OrigMap);\n }\n var setSupportsSubclassing = supportsSubclassing(globals.Set, function (S) {\n var s = new S([]);\n s.add(42, 42);\n return s instanceof S;\n });\n // without Object.setPrototypeOf, subclassing is not possible\n var setFailsToSupportSubclassing = Object.setPrototypeOf && !setSupportsSubclassing;\n var setRequiresNew = (function () {\n try {\n return !(globals.Set() instanceof globals.Set);\n } catch (e) {\n return e instanceof TypeError;\n }\n }());\n if (globals.Set.length !== 0 || setFailsToSupportSubclassing || !setRequiresNew) {\n var OrigSet = globals.Set;\n globals.Set = function Set() {\n if (!(this instanceof Set)) {\n throw new TypeError('Constructor Set requires \"new\"');\n }\n var s = new OrigSet();\n if (arguments.length > 0) {\n addIterableToSet(Set, s, arguments[0]);\n }\n delete s.constructor;\n Object.setPrototypeOf(s, Set.prototype);\n return s;\n };\n globals.Set.prototype = OrigSet.prototype;\n defineProperty(globals.Set.prototype, 'constructor', globals.Set, true);\n Value.preserveToString(globals.Set, OrigSet);\n }\n var newMap = new globals.Map();\n var mapIterationThrowsStopIterator = !valueOrFalseIfThrows(function () {\n return newMap.keys().next().done;\n });\n /*\n - In Firefox < 23, Map#size is a function.\n - In all current Firefox, Set#entries/keys/values & Map#clear do not exist\n - https://bugzilla.mozilla.org/show_bug.cgi?id=869996\n - In Firefox 24, Map and Set do not implement forEach\n - In Firefox 25 at least, Map and Set are callable without \"new\"\n */\n if (\n typeof globals.Map.prototype.clear !== 'function' ||\n new globals.Set().size !== 0 ||\n newMap.size !== 0 ||\n typeof globals.Map.prototype.keys !== 'function' ||\n typeof globals.Set.prototype.keys !== 'function' ||\n typeof globals.Map.prototype.forEach !== 'function' ||\n typeof globals.Set.prototype.forEach !== 'function' ||\n isCallableWithoutNew(globals.Map) ||\n isCallableWithoutNew(globals.Set) ||\n typeof newMap.keys().next !== 'function' || // Safari 8\n mapIterationThrowsStopIterator || // Firefox 25\n !mapSupportsSubclassing\n ) {\n defineProperties(globals, {\n Map: collectionShims.Map,\n Set: collectionShims.Set\n }, true);\n }\n\n if (globals.Set.prototype.keys !== globals.Set.prototype.values) {\n // Fixed in WebKit with https://bugs.webkit.org/show_bug.cgi?id=144190\n defineProperty(globals.Set.prototype, 'keys', globals.Set.prototype.values, true);\n }\n\n // Shim incomplete iterator implementations.\n addIterator(Object.getPrototypeOf((new globals.Map()).keys()));\n addIterator(Object.getPrototypeOf((new globals.Set()).keys()));\n\n if (functionsHaveNames && globals.Set.prototype.has.name !== 'has') {\n // Microsoft Edge v0.11.10074.0 is missing a name on Set#has\n var anonymousSetHas = globals.Set.prototype.has;\n overrideNative(globals.Set.prototype, 'has', function has(key) {\n return _call(anonymousSetHas, this, key);\n });\n }\n }\n defineProperties(globals, collectionShims);\n addDefaultSpecies(globals.Map);\n addDefaultSpecies(globals.Set);\n }\n\n var throwUnlessTargetIsObject = function throwUnlessTargetIsObject(target) {\n if (!ES.TypeIsObject(target)) {\n throw new TypeError('target must be an object');\n }\n };\n\n // Some Reflect methods are basically the same as\n // those on the Object global, except that a TypeError is thrown if\n // target isn't an object. As well as returning a boolean indicating\n // the success of the operation.\n var ReflectShims = {\n // Apply method in a functional form.\n apply: function apply() {\n return ES.Call(ES.Call, null, arguments);\n },\n\n // New operator in a functional form.\n construct: function construct(constructor, args) {\n if (!ES.IsConstructor(constructor)) {\n throw new TypeError('First argument must be a constructor.');\n }\n var newTarget = arguments.length > 2 ? arguments[2] : constructor;\n if (!ES.IsConstructor(newTarget)) {\n throw new TypeError('new.target must be a constructor.');\n }\n return ES.Construct(constructor, args, newTarget, 'internal');\n },\n\n // When deleting a non-existent or configurable property,\n // true is returned.\n // When attempting to delete a non-configurable property,\n // it will return false.\n deleteProperty: function deleteProperty(target, key) {\n throwUnlessTargetIsObject(target);\n if (supportsDescriptors) {\n var desc = Object.getOwnPropertyDescriptor(target, key);\n\n if (desc && !desc.configurable) {\n return false;\n }\n }\n\n // Will return true.\n return delete target[key];\n },\n\n has: function has(target, key) {\n throwUnlessTargetIsObject(target);\n return key in target;\n }\n };\n\n if (Object.getOwnPropertyNames) {\n Object.assign(ReflectShims, {\n // Basically the result of calling the internal [[OwnPropertyKeys]].\n // Concatenating propertyNames and propertySymbols should do the trick.\n // This should continue to work together with a Symbol shim\n // which overrides Object.getOwnPropertyNames and implements\n // Object.getOwnPropertySymbols.\n ownKeys: function ownKeys(target) {\n throwUnlessTargetIsObject(target);\n var keys = Object.getOwnPropertyNames(target);\n\n if (ES.IsCallable(Object.getOwnPropertySymbols)) {\n _pushApply(keys, Object.getOwnPropertySymbols(target));\n }\n\n return keys;\n }\n });\n }\n\n var callAndCatchException = function ConvertExceptionToBoolean(func) {\n return !throwsError(func);\n };\n\n if (Object.preventExtensions) {\n Object.assign(ReflectShims, {\n isExtensible: function isExtensible(target) {\n throwUnlessTargetIsObject(target);\n return Object.isExtensible(target);\n },\n preventExtensions: function preventExtensions(target) {\n throwUnlessTargetIsObject(target);\n return callAndCatchException(function () {\n return Object.preventExtensions(target);\n });\n }\n });\n }\n\n if (supportsDescriptors) {\n var internalGet = function get(target, key, receiver) {\n var desc = Object.getOwnPropertyDescriptor(target, key);\n\n if (!desc) {\n var parent = Object.getPrototypeOf(target);\n\n if (parent === null) {\n return void 0;\n }\n\n return internalGet(parent, key, receiver);\n }\n\n if ('value' in desc) {\n return desc.value;\n }\n\n if (desc.get) {\n return ES.Call(desc.get, receiver);\n }\n\n return void 0;\n };\n\n var internalSet = function set(target, key, value, receiver) {\n var desc = Object.getOwnPropertyDescriptor(target, key);\n\n if (!desc) {\n var parent = Object.getPrototypeOf(target);\n\n if (parent !== null) {\n return internalSet(parent, key, value, receiver);\n }\n\n desc = {\n value: void 0,\n writable: true,\n enumerable: true,\n configurable: true\n };\n }\n\n if ('value' in desc) {\n if (!desc.writable) {\n return false;\n }\n\n if (!ES.TypeIsObject(receiver)) {\n return false;\n }\n\n var existingDesc = Object.getOwnPropertyDescriptor(receiver, key);\n\n if (existingDesc) {\n return Reflect.defineProperty(receiver, key, {\n value: value\n });\n } else {\n return Reflect.defineProperty(receiver, key, {\n value: value,\n writable: true,\n enumerable: true,\n configurable: true\n });\n }\n }\n\n if (desc.set) {\n _call(desc.set, receiver, value);\n return true;\n }\n\n return false;\n };\n\n Object.assign(ReflectShims, {\n defineProperty: function defineProperty(target, propertyKey, attributes) {\n throwUnlessTargetIsObject(target);\n return callAndCatchException(function () {\n return Object.defineProperty(target, propertyKey, attributes);\n });\n },\n\n getOwnPropertyDescriptor: function getOwnPropertyDescriptor(target, propertyKey) {\n throwUnlessTargetIsObject(target);\n return Object.getOwnPropertyDescriptor(target, propertyKey);\n },\n\n // Syntax in a functional form.\n get: function get(target, key) {\n throwUnlessTargetIsObject(target);\n var receiver = arguments.length > 2 ? arguments[2] : target;\n\n return internalGet(target, key, receiver);\n },\n\n set: function set(target, key, value) {\n throwUnlessTargetIsObject(target);\n var receiver = arguments.length > 3 ? arguments[3] : target;\n\n return internalSet(target, key, value, receiver);\n }\n });\n }\n\n if (Object.getPrototypeOf) {\n var objectDotGetPrototypeOf = Object.getPrototypeOf;\n ReflectShims.getPrototypeOf = function getPrototypeOf(target) {\n throwUnlessTargetIsObject(target);\n return objectDotGetPrototypeOf(target);\n };\n }\n\n if (Object.setPrototypeOf && ReflectShims.getPrototypeOf) {\n var willCreateCircularPrototype = function (object, lastProto) {\n var proto = lastProto;\n while (proto) {\n if (object === proto) {\n return true;\n }\n proto = ReflectShims.getPrototypeOf(proto);\n }\n return false;\n };\n\n Object.assign(ReflectShims, {\n // Sets the prototype of the given object.\n // Returns true on success, otherwise false.\n setPrototypeOf: function setPrototypeOf(object, proto) {\n throwUnlessTargetIsObject(object);\n if (proto !== null && !ES.TypeIsObject(proto)) {\n throw new TypeError('proto must be an object or null');\n }\n\n // If they already are the same, we're done.\n if (proto === Reflect.getPrototypeOf(object)) {\n return true;\n }\n\n // Cannot alter prototype if object not extensible.\n if (Reflect.isExtensible && !Reflect.isExtensible(object)) {\n return false;\n }\n\n // Ensure that we do not create a circular prototype chain.\n if (willCreateCircularPrototype(object, proto)) {\n return false;\n }\n\n Object.setPrototypeOf(object, proto);\n\n return true;\n }\n });\n }\n var defineOrOverrideReflectProperty = function (key, shim) {\n if (!ES.IsCallable(globals.Reflect[key])) {\n defineProperty(globals.Reflect, key, shim);\n } else {\n var acceptsPrimitives = valueOrFalseIfThrows(function () {\n globals.Reflect[key](1);\n globals.Reflect[key](NaN);\n globals.Reflect[key](true);\n return true;\n });\n if (acceptsPrimitives) {\n overrideNative(globals.Reflect, key, shim);\n }\n }\n };\n Object.keys(ReflectShims).forEach(function (key) {\n defineOrOverrideReflectProperty(key, ReflectShims[key]);\n });\n var originalReflectGetProto = globals.Reflect.getPrototypeOf;\n if (functionsHaveNames && originalReflectGetProto && originalReflectGetProto.name !== 'getPrototypeOf') {\n overrideNative(globals.Reflect, 'getPrototypeOf', function getPrototypeOf(target) {\n return _call(originalReflectGetProto, globals.Reflect, target);\n });\n }\n if (globals.Reflect.setPrototypeOf) {\n if (valueOrFalseIfThrows(function () {\n globals.Reflect.setPrototypeOf(1, {});\n return true;\n })) {\n overrideNative(globals.Reflect, 'setPrototypeOf', ReflectShims.setPrototypeOf);\n }\n }\n if (globals.Reflect.defineProperty) {\n if (!valueOrFalseIfThrows(function () {\n var basic = !globals.Reflect.defineProperty(1, 'test', { value: 1 });\n // \"extensible\" fails on Edge 0.12\n var extensible = typeof Object.preventExtensions !== 'function' || !globals.Reflect.defineProperty(Object.preventExtensions({}), 'test', {});\n return basic && extensible;\n })) {\n overrideNative(globals.Reflect, 'defineProperty', ReflectShims.defineProperty);\n }\n }\n if (globals.Reflect.construct) {\n if (!valueOrFalseIfThrows(function () {\n var F = function F() {};\n return globals.Reflect.construct(function () {}, [], F) instanceof F;\n })) {\n overrideNative(globals.Reflect, 'construct', ReflectShims.construct);\n }\n }\n\n if (String(new Date(NaN)) !== 'Invalid Date') {\n var dateToString = Date.prototype.toString;\n var shimmedDateToString = function toString() {\n var valueOf = +this;\n if (valueOf !== valueOf) {\n return 'Invalid Date';\n }\n return ES.Call(dateToString, this);\n };\n overrideNative(Date.prototype, 'toString', shimmedDateToString);\n }\n\n // Annex B HTML methods\n // http://www.ecma-international.org/ecma-262/6.0/#sec-additional-properties-of-the-string.prototype-object\n var stringHTMLshims = {\n anchor: function anchor(name) { return ES.CreateHTML(this, 'a', 'name', name); },\n big: function big() { return ES.CreateHTML(this, 'big', '', ''); },\n blink: function blink() { return ES.CreateHTML(this, 'blink', '', ''); },\n bold: function bold() { return ES.CreateHTML(this, 'b', '', ''); },\n fixed: function fixed() { return ES.CreateHTML(this, 'tt', '', ''); },\n fontcolor: function fontcolor(color) { return ES.CreateHTML(this, 'font', 'color', color); },\n fontsize: function fontsize(size) { return ES.CreateHTML(this, 'font', 'size', size); },\n italics: function italics() { return ES.CreateHTML(this, 'i', '', ''); },\n link: function link(url) { return ES.CreateHTML(this, 'a', 'href', url); },\n small: function small() { return ES.CreateHTML(this, 'small', '', ''); },\n strike: function strike() { return ES.CreateHTML(this, 'strike', '', ''); },\n sub: function sub() { return ES.CreateHTML(this, 'sub', '', ''); },\n sup: function sub() { return ES.CreateHTML(this, 'sup', '', ''); }\n };\n _forEach(Object.keys(stringHTMLshims), function (key) {\n var method = String.prototype[key];\n var shouldOverwrite = false;\n if (ES.IsCallable(method)) {\n var output = _call(method, '', ' \" ');\n var quotesCount = _concat([], output.match(/\"/g)).length;\n shouldOverwrite = output !== output.toLowerCase() || quotesCount > 2;\n } else {\n shouldOverwrite = true;\n }\n if (shouldOverwrite) {\n overrideNative(String.prototype, key, stringHTMLshims[key]);\n }\n });\n\n var JSONstringifiesSymbols = (function () {\n // Microsoft Edge v0.12 stringifies Symbols incorrectly\n if (!hasSymbols) { return false; } // Symbols are not supported\n var stringify = typeof JSON === 'object' && typeof JSON.stringify === 'function' ? 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{ return; }\n var replacer;\n if (arguments.length > 1) {\n replacer = arguments[1];\n }\n var args = [value];\n if (!isArray(replacer)) {\n var replaceFn = ES.IsCallable(replacer) ? replacer : null;\n var wrappedReplacer = function (key, val) {\n var parsedValue = replaceFn ? _call(replaceFn, this, key, val) : val;\n if (typeof parsedValue !== 'symbol') {\n if (Type.symbol(parsedValue)) {\n return assignTo({})(parsedValue);\n } else {\n return parsedValue;\n }\n }\n };\n args.push(wrappedReplacer);\n } else {\n // create wrapped replacer that handles an array replacer?\n args.push(replacer);\n }\n if (arguments.length > 2) {\n args.push(arguments[2]);\n }\n return origStringify.apply(this, args);\n });\n }\n\n return globals;\n}));\n","// Source: http://jsfiddle.net/vWx8V/\n// http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes\n\n/**\n * Conenience method returns corresponding value for given keyName or keyCode.\n *\n * @param {Mixed} keyCode {Number} or keyName {String}\n * @return {Mixed}\n * @api public\n */\n\nfunction keyCode(searchInput) {\n // Keyboard Events\n if (searchInput && 'object' === typeof searchInput) {\n var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode\n if (hasKeyCode) searchInput = hasKeyCode\n }\n\n // Numbers\n if ('number' === typeof searchInput) return names[searchInput]\n\n // Everything else (cast to string)\n var search = String(searchInput)\n\n // check codes\n var foundNamedKey = codes[search.toLowerCase()]\n if (foundNamedKey) return foundNamedKey\n\n // check aliases\n var foundNamedKey = aliases[search.toLowerCase()]\n if (foundNamedKey) return foundNamedKey\n\n // weird character?\n if (search.length === 1) return search.charCodeAt(0)\n\n return undefined\n}\n\n/**\n * Compares a keyboard event with a given keyCode or keyName.\n *\n * @param {Event} event Keyboard event that should be tested\n * @param {Mixed} keyCode {Number} or keyName {String}\n * @return {Boolean}\n * @api public\n */\nkeyCode.isEventKey = function isEventKey(event, nameOrCode) {\n if (event && 'object' === typeof event) {\n var keyCode = event.which || event.keyCode || event.charCode\n if (keyCode === null || keyCode === undefined) { return false; }\n if (typeof nameOrCode === 'string') {\n // check codes\n var foundNamedKey = codes[nameOrCode.toLowerCase()]\n if (foundNamedKey) { return foundNamedKey === keyCode; }\n \n // check aliases\n var foundNamedKey = aliases[nameOrCode.toLowerCase()]\n if (foundNamedKey) { return foundNamedKey === keyCode; }\n } else if (typeof nameOrCode === 'number') {\n return nameOrCode === keyCode;\n }\n return false;\n }\n}\n\nexports = module.exports = keyCode;\n\n/**\n * Get by name\n *\n * exports.code['enter'] // => 13\n */\n\nvar codes = exports.code = exports.codes = {\n 'backspace': 8,\n 'tab': 9,\n 'enter': 13,\n 'shift': 16,\n 'ctrl': 17,\n 'alt': 18,\n 'pause/break': 19,\n 'caps lock': 20,\n 'esc': 27,\n 'space': 32,\n 'page up': 33,\n 'page down': 34,\n 'end': 35,\n 'home': 36,\n 'left': 37,\n 'up': 38,\n 'right': 39,\n 'down': 40,\n 'insert': 45,\n 'delete': 46,\n 'command': 91,\n 'left command': 91,\n 'right command': 93,\n 'numpad *': 106,\n 'numpad +': 107,\n 'numpad -': 109,\n 'numpad .': 110,\n 'numpad /': 111,\n 'num lock': 144,\n 'scroll lock': 145,\n 'my computer': 182,\n 'my calculator': 183,\n ';': 186,\n '=': 187,\n ',': 188,\n '-': 189,\n '.': 190,\n '/': 191,\n '`': 192,\n '[': 219,\n '\\\\': 220,\n ']': 221,\n \"'\": 222\n}\n\n// Helper aliases\n\nvar aliases = exports.aliases = {\n 'windows': 91,\n '⇧': 16,\n '⌥': 18,\n '⌃': 17,\n '⌘': 91,\n 'ctl': 17,\n 'control': 17,\n 'option': 18,\n 'pause': 19,\n 'break': 19,\n 'caps': 20,\n 'return': 13,\n 'escape': 27,\n 'spc': 32,\n 'spacebar': 32,\n 'pgup': 33,\n 'pgdn': 34,\n 'ins': 45,\n 'del': 46,\n 'cmd': 91\n}\n\n/*!\n * Programatically add the following\n */\n\n// lower case chars\nfor (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32\n\n// 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d=b.mode,e=b.pendingProps,f=b.memoizedState;if(0===(b.effectTag&64)){f=null;var g=!1}else f={timedOutAt:null!==f?f.timedOutAt:0},g=!0,b.effectTag&=-65;null===a?g?(g=e.fallback,e=af(null,d,0,null),0===(b.mode&1)&&(e.child=null!==b.memoizedState?b.child.child:b.child),d=af(g,d,c,null),e.sibling=d,c=e,c.return=d.return=b):c=d=dg(b,null,e.children,c):null!==a.memoizedState?(d=a.child,a=d.sibling,g?(c=e.fallback,e=Ze(d,d.pendingProps,0),0===(b.mode&1)&&(g=null!==b.memoizedState?\nb.child.child:b.child,g!==d.child&&(e.child=g)),d=e.sibling=Ze(a,c,a.expirationTime),c=e,e.childExpirationTime=0,c.return=d.return=b):c=d=cg(b,d.child,e.children,c)):(a=a.child,g?(g=e.fallback,e=af(null,d,0,null),e.child=a,0===(b.mode&1)&&(e.child=null!==b.memoizedState?b.child.child:b.child),d=e.sibling=af(g,d,c,null),d.effectTag|=2,c=e,e.childExpirationTime=0,c.return=d.return=b):d=c=cg(b,a,e.children,c));b.memoizedState=f;b.child=c;return d}\nfunction rg(a,b,c){null!==a&&(b.firstContextDependency=a.firstContextDependency);if(b.childExpirationTime<c)return null;null!==a&&b.child!==a.child?t(\"153\"):void 0;if(null!==b.child){a=b.child;c=Ze(a,a.pendingProps,a.expirationTime);b.child=c;for(c.return=b;null!==a.sibling;)a=a.sibling,c=c.sibling=Ze(a,a.pendingProps,a.expirationTime),c.return=b;c.sibling=null}return b.child}\nfunction yg(a,b,c){var d=b.expirationTime;if(null!==a&&a.memoizedProps===b.pendingProps&&!K.current&&d<c){switch(b.tag){case 3:wg(b);mg();break;case 5:Kf(b);break;case 1:L(b.type)&&Qe(b);break;case 4:If(b,b.stateNode.containerInfo);break;case 10:Af(b,b.memoizedProps.value);break;case 13:if(null!==b.memoizedState){d=b.child.childExpirationTime;if(0!==d&&d>=c)return xg(a,b,c);b=rg(a,b,c);return null!==b?b.sibling:null}}return rg(a,b,c)}b.expirationTime=0;switch(b.tag){case 2:d=b.elementType;null!==\na&&(a.alternate=null,b.alternate=null,b.effectTag|=2);a=b.pendingProps;var e=Le(b,J.current);Cf(b,c);e=d(a,e);b.effectTag|=1;if(\"object\"===typeof e&&null!==e&&\"function\"===typeof e.render&&void 0===e.$$typeof){b.tag=1;if(L(d)){var f=!0;Qe(b)}else f=!1;b.memoizedState=null!==e.state&&void 0!==e.state?e.state:null;var g=d.getDerivedStateFromProps;\"function\"===typeof g&&Pf(b,d,g,a);e.updater=Uf;b.stateNode=e;e._reactInternalFiber=b;Yf(b,d,a,c);b=vg(null,b,d,!0,f,c)}else b.tag=0,P(null,b,e,c),b=b.child;\nreturn b;case 16:e=b.elementType;null!==a&&(a.alternate=null,b.alternate=null,b.effectTag|=2);f=b.pendingProps;a=Mf(e);b.type=a;e=b.tag=Ye(a);f=O(a,f);g=void 0;switch(e){case 0:g=sg(null,b,a,f,c);break;case 1:g=ug(null,b,a,f,c);break;case 11:g=og(null,b,a,f,c);break;case 14:g=pg(null,b,a,O(a.type,f),d,c);break;default:t(\"283\",a)}return g;case 0:return d=b.type,e=b.pendingProps,e=b.elementType===d?e:O(d,e),sg(a,b,d,e,c);case 1:return d=b.type,e=b.pendingProps,e=b.elementType===d?e:O(d,e),ug(a,b,d,\ne,c);case 3:wg(b);d=b.updateQueue;null===d?t(\"282\"):void 0;e=b.memoizedState;e=null!==e?e.element:null;sf(b,d,b.pendingProps,null,c);d=b.memoizedState.element;if(d===e)mg(),b=rg(a,b,c);else{e=b.stateNode;if(e=(null===a||null===a.child)&&e.hydrate)fg=Ge(b.stateNode.containerInfo),eg=b,e=gg=!0;e?(b.effectTag|=2,b.child=dg(b,null,d,c)):(P(a,b,d,c),mg());b=b.child}return b;case 5:return Kf(b),null===a&&jg(b),d=b.type,e=b.pendingProps,f=null!==a?a.memoizedProps:null,g=e.children,Ce(d,e)?g=null:null!==\nf&&Ce(d,f)&&(b.effectTag|=16),tg(a,b),1!==c&&b.mode&1&&e.hidden?(b.expirationTime=1,b=null):(P(a,b,g,c),b=b.child),b;case 6:return null===a&&jg(b),null;case 13:return xg(a,b,c);case 4:return If(b,b.stateNode.containerInfo),d=b.pendingProps,null===a?b.child=cg(b,null,d,c):P(a,b,d,c),b.child;case 11:return d=b.type,e=b.pendingProps,e=b.elementType===d?e:O(d,e),og(a,b,d,e,c);case 7:return P(a,b,b.pendingProps,c),b.child;case 8:return P(a,b,b.pendingProps.children,c),b.child;case 12:return P(a,b,b.pendingProps.children,\nc),b.child;case 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